CN113188702B

CN113188702B - Torsion detection device of machining equipment, machining equipment and torsion detection method

Info

Publication number: CN113188702B
Application number: CN202110737937.7A
Authority: CN
Inventors: 季峰; 武凡凯; 庞士君
Original assignee: Suzhou Vega Technology Co Ltd
Current assignee: Suzhou Vega Technology Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-09-14
Anticipated expiration: 2041-06-30
Also published as: CN113188702A

Abstract

The invention discloses a torsion detection device, machining equipment and a torsion detection method of the machining equipment, wherein the machining equipment comprises a machine table, a workbench, a main shaft and the torsion detection device, the torsion detection device is used for detecting torsion borne by a cutter when the cutter moves relative to the main shaft, and the torsion detection device comprises: the driving unit is arranged on the workbench; the detection unit comprises a detection head and a torque sensor, the detection head is arranged on the torque sensor, the driving unit is connected with the torque sensor to drive the detection unit to rotate, and the detection head is suitable for being detachably connected with the spindle when the torque detection device is in a working state. According to the torsion detection device provided by the invention, whether the main shaft can provide enough clamping force for the cutter or not can be accurately judged so as to ensure the machining precision of the cutter, the yield of products produced by machining equipment is improved, and the detection efficiency can be obviously improved.

Description

Torsion detection device of machining equipment, machining equipment and torsion detection method

Technical Field

The invention relates to the technical field of machining equipment detection, in particular to a torsion detection device, machining equipment and a torsion detection method of the machining equipment.

Background

In the production process of the printed circuit board, in order to connect circuit layers and mount electronic components in the later period, a drilling machine is used for drilling holes on a production board, and the edge milling and forming are carried out on a PCB (printed circuit board) according to the design requirement. The main shafts of the drilling machine and the edge milling machine are important devices for processing the PCB, the grabbing of the cutter is realized by controlling the opening and closing of a chuck of the main shaft, and the chuck is an auxiliary component of the main shaft.

Torsion detection of a main shaft chuck of a drilling machine and an edge milling machine in the related art mostly adopts a manual mode, so that the efficiency is low, and the situation that the detection is not in place exists. In addition, due to manual detection, the maintenance period is uncertain, abnormality cannot be found in time, such as loosening of the chuck and clamping failure, existence of foreign matters on the surface of the chuck, incapability of guaranteeing normal machining torsion and the like. Even if the detection is carried out regularly, the maintenance cost is very high, the maintenance is required by professional personnel every time, the maintenance is difficult to realize at a client end in mass production, and abnormal conditions can be displayed after the plate is processed, so that the prevention cannot be realized. This means that, once an anomaly occurs, the batch of finished products is scrapped, with an immeasurable loss.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a torsion detection device of a processing device, which can accurately test the reliability of a main shaft and ensure the processing precision of the processing device.

The invention also provides a processing device with the torsion detection device.

The invention further provides a torsion detection method applied to the machining equipment.

According to the torsion detection device of the processing equipment, the processing equipment comprises a machine table, a workbench, a main shaft and the torsion detection device, wherein the workbench and the main shaft are movably arranged on the machine table, the torsion detection device is arranged on the workbench and is used for detecting the torsion borne by a cutter when the cutter moves relative to the main shaft, and the torsion detection device comprises: the driving unit is arranged on the workbench; the detection unit comprises a detection head and a torque sensor, the detection head is arranged on the torque sensor, the driving unit is connected with the torque sensor to drive the detection unit to rotate, and the detection head is suitable for being detachably connected with the spindle when the torque detection device is in a working state.

According to the torsion detection device provided by the embodiment of the invention, when the spindle is detected, the detection head is used for replacing and simulating the cutter, and the driving unit drives the detection head to rotate, so that the torsion borne by the cutter in a real working state when the cutter moves relative to the spindle can be detected and obtained, whether the spindle can provide enough clamping force for the cutter can be accurately judged, the machining precision of the cutter is ensured, the problem of the spindle can be timely found and solved, the yield of products produced by machining equipment is improved, meanwhile, compared with a manual detection mode adopted in the related technology, the torsion detection device can obviously improve the detection efficiency and the accuracy of a detection result, and the labor cost is saved.

According to some embodiments of the invention, the detection head is removably coupled to the torque sensor.

Furthermore, one of the torque sensor and the detection head is provided with a connecting hole, and the other of the torque sensor and the detection head is provided with a connecting shaft matched with the connecting hole.

Still further, the cross section of the connecting shaft is formed to be non-circular, and the cross section of the connecting hole is formed to be non-circular and adapted to the shape of the connecting shaft.

In one particular example, the sensing head is integrally formed with the torque sensor.

According to some embodiments of the present invention, one end of the spindle in the axial direction is formed with a chuck for clamping a tool, and the detection head includes: the base body is connected with the torque sensor, the detection needle is arranged on the base body, and the detection needle is suitable for being clamped by the chuck under the working state of the torque detection device.

According to some embodiments of the invention, the drive unit comprises: a linear actuator having a telescoping piston rod; one end of the connecting rod is pivotally connected with the piston rod, and the other end of the connecting rod is connected with the torque sensor; alternatively, the driving unit includes: the output end of the rotary driver is connected with the torque sensor, and the output end of the rotary driver drives the torque sensor to rotate when rotating.

Further, the linear driver is an air cylinder, an electric cylinder or a hydraulic cylinder, and the rotary driver is a driving motor or a rotary air cylinder.

In some embodiments, the torsion detection apparatus further comprises: the carousel, the carousel is established torque sensor is last, the carousel with the detection head is located torque sensor's axial both sides, the drive unit establishes keeping away from of carousel one side torque sensor, the drive unit with the carousel links to each other in order to drive the detecting element rotates.

Further, the torsion detecting device further includes: the fixed plate, the fixed plate is established on the workstation, the detecting element with the drive unit is established respectively the ascending relative both sides of fixed plate thickness direction, be formed with on the fixed plate and dodge the hole, at least some of carousel rotationally hold in dodge the hole, the workstation has the work piece and places the district, the fixed plate is established the work piece is placed the district and is distinguished one side on the horizontal direction.

According to some embodiments of the invention, a connection mechanism is provided between the turntable and the connecting rod or between the turntable and the output end of the rotary driver, the connection mechanism comprising a mounting hole provided on the turntable and a mating shaft provided on the connecting rod or the output end of the rotary driver, the mating shaft being adapted to fit in the mounting hole.

A processing apparatus according to a second aspect of the present invention comprises: the torsion detecting apparatus according to the above-described embodiment of the first aspect of the present invention.

According to the processing equipment provided by the embodiment of the invention, the torsion force applied to the tool in the movement relative to the main shaft in the actual working state can be detected by arranging the torsion force detection device provided by the embodiment of the invention, so that the clamping performance of the main shaft to the tool can be accurately judged, and the reliability and the yield of the processing equipment can be ensured.

According to a third aspect of the present invention, a method for detecting a torque applied to a machining apparatus according to the second aspect of the present invention includes: detecting and acquiring the working time of the main shaft to reach the preset time; detecting whether the main shaft clamps a cutter or not, and if the main shaft clamps the cutter, controlling the main shaft to withdraw the cutter; controlling the spindle to move to a detection position; controlling the main shaft to clamp the detection head; and controlling the driving unit to work so as to drive the detection unit to rotate, wherein the torque sensor outputs an electric signal.

According to the torsion detection method provided by the embodiment of the invention, the torsion borne by the cutter in the real working state when moving relative to the main shaft can be detected and obtained, so that whether the main shaft can provide enough clamping force for the cutter or not can be accurately judged to ensure the machining precision of the cutter, the problem of the main shaft can be timely found and solved, the yield of products produced by machining equipment can be improved, and meanwhile, compared with a manual detection mode adopted in the related technology, the torsion detection method can obviously improve the detection efficiency and the accuracy of a detection result, and the labor cost is saved.

Further, the torsion detection method further comprises; acquiring an electric signal output by the torque sensor, wherein the electric signal is a detection voltage signal value; judging and comparing the magnitude of the detection voltage signal value with a preset voltage signal value; if the detection voltage signal value is larger than the preset voltage signal value, the spindle is in a normal state and controls the torque detection device to quit detection; and if the detection voltage signal value is smaller than the preset voltage signal value, the spindle is in an abnormal state and gives an alarm prompt.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic view of a processing apparatus according to an embodiment of the present invention;

FIG. 2 is an assembled schematic view of a spindle of the machining apparatus shown in FIG. 1;

FIG. 3 is a schematic view of the torsion detecting apparatus of FIG. 1;

FIG. 4 is a schematic view of another angle of the torsion detecting apparatus shown in FIG. 3;

fig. 5 is a sectional view of the torsion detecting apparatus shown in fig. 3;

fig. 6 is a schematic view of a driving unit of the torsion detecting apparatus shown in fig. 3;

fig. 7 is a schematic view of a detecting unit of the torsion detecting apparatus shown in fig. 3;

FIG. 8 is a flow chart of one embodiment of a torque detection method according to an embodiment of the present invention;

fig. 9 is a flowchart of another embodiment of a torque detection method according to an embodiment of the present invention.

Reference numerals:

the processing equipment 1000:

the torque force detecting device 100 is provided with a torque force detecting device,

the driving unit 1, the driving cylinder 11, the speed regulating valve 111, the connecting rod 12, the matching shaft 121, the cylinder piston 13,

the detection unit 2, the detection head 21, the detection needle 211, the base body 212, the connection hole 213, the torque sensor 22, the connection shaft 221,

a rotary plate 3, a rotary shaft 31, a mounting hole 32, a plate body 33, a fixing plate 4, a relief hole 41,

the machine tool comprises a machine tool body 200, a workbench 201, a workpiece placing area 2011, a cross beam 202, a mounting plate 203, a clamping piece 204, a pressing plate 205, a main shaft 206 and a clamping head 207.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

A torsion detecting apparatus 100 of a processing apparatus 1000 according to an embodiment of the first aspect of the present invention is described below with reference to fig. 1 to 9.

As shown in fig. 1, the torsion detecting apparatus 100 of the processing apparatus 1000 according to the embodiment of the first aspect of the present invention, wherein the processing apparatus 1000 may be a drilling processing apparatus, such as a drilling machine, or a milling processing apparatus, such as an edge milling machine, or the like, the processing apparatus 1000 may also be a drilling and milling integrated apparatus, and the processing apparatus 1000 may be used for drilling and/or edge milling operations of a circuit board.

The processing apparatus 1000 may include a table, a table 201, a spindle 206, and a torsion detecting device 100, wherein the table 201 and the spindle 206 are both disposed on the table, and both the table 201 and the spindle 206 are movable relative to the table, for example, the table may include a bed 200, the spindle 206 may perform a horizontal translational motion in an X direction (a left-right direction shown in fig. 1) and a vertical motion in a Z direction (an up-down direction shown in fig. 1) on the bed 200, and the table 201 may perform a horizontal translational motion in a Y direction (a front-back direction shown in fig. 1) on the bed 200. The torsion detecting apparatus 100 is disposed on the working platform 201, and when the processing apparatus 1000 works, the main shaft 206 drives the tool to rotate, for example, a clamping head 207 may be disposed at a bottom end of the main shaft 206, and the clamping head 207 may clamp the tool, so that the tool rotates along with the clamping head 207. When a tool acts on a workpiece, due to interaction between the tool and the workpiece, such as frictional resistance, relative motion occurs between the spindle 206 and the tool, the torsion detection apparatus 100 may be configured to detect torsion applied to the tool when the tool moves relative to the spindle 206, determine a clamping force of the chuck 207 on the spindle 206 to the tool through detection of the torsion, and find problems of the spindle 206 and the chuck 207 thereof, so as to ensure that the chuck 207 can clamp the tool to improve the machining precision of the tool, thereby improving the yield of products of the production equipment 1000.

The torsion detecting apparatus 100 may include: a drive unit 1 and a detection unit 2. The driving unit 1 is disposed on the table 201, and the driving unit 1 can output a driving force to load the spindle 206. The detecting unit 2 may include a detecting head 21 and a torque sensor 22, the detecting head 21 is disposed on the torque sensor 22, and the driving unit 1 is connected to the torque sensor 22 to drive the detecting unit 2 to rotate. In the working state of the torque detecting device 100, the detecting head 21 is adapted to be detachably connected to the main shaft 206, that is, the detecting head 21 can be used to simulate a tool when the torque detecting device 100 is in operation. Specifically, before the spindle 206 is detected, the chuck 207 of the spindle 206 may be controlled to clamp the detection head 21, and then the driving unit 1 may be controlled to drive the entire detection unit 2 to rotate, so that since the spindle 206 is stationary, relative motion occurs between the detection unit 2 and the spindle 206, which may simulate relative motion of a tool with respect to the spindle 206. Because the detecting unit 2 is twisted relative to the main shaft 206 to generate a certain degree of deformation, the torque sensor 22 can convert the deformation thereof into an electrical signal for feedback, thereby calculating the torque force applied to the tool when the tool moves relative to the main shaft 206, and determining the clamping force of the main shaft 206 on the tool according to the torque force. If the clamping force is smaller than the preset clamping force, it is indicated that when the spindle 206 works, the chuck 207 cannot provide sufficient clamping force for the tool, which may cause the tool to loosen and cause a problem of reduction in machining precision, and at this time, it is required to detect whether the spindle 206 has a problem or whether foreign matter is on the surface of the chuck 207 and needs to be cleaned in time; if the clamping force is greater than the predetermined clamping force, which indicates that the spindle 206 is working, the chuck 207 may provide sufficient clamping force for the tool, the machining precision of the tool may be ensured, and the detection may be stopped at this time. After the detection is finished, the spindle 206 is controlled to loosen the chuck 207, and then the spindle 206 is separated from the detection head 21 of the detection unit 2, so that the spindle 206 can be automatically detected, and compared with manual detection, the detection efficiency and the accuracy of a detection result can be improved.

In addition, the torque detection apparatus 100 may be configured to detect the spindle 206 according to a predetermined detection period, specifically, each time the predetermined detection period is reached, it is determined whether the spindle 206 is in a working state, that is, whether a workpiece is currently processed, and if the spindle 206 is currently in the working state, the torque detection apparatus 100 is controlled to start the detection program after the current workpiece is processed; if the main shaft 206 is not in the working state, the torque detection apparatus 100 is controlled to directly enter the detection procedure.

According to the torsion detection device 100 of the embodiment of the invention, when the spindle 206 is detected, the detection head 21 is used for replacing and simulating the tool, and the driving unit 1 drives the detection head 21 to rotate, so that the torsion borne by the tool in a real working state when moving relative to the spindle 206 can be detected and obtained, and whether the spindle 206 can provide enough clamping force for the tool can be accurately judged so as to ensure the processing precision of the tool, the problem of the spindle 206 can be found and solved in time, the yield of products produced by the processing equipment 1000 is improved, meanwhile, compared with a manual detection mode in the related technology, the detection efficiency and the accuracy of a detection result can be obviously improved, and the labor cost is saved.

According to some embodiments of the present invention, the detection head 21 is detachably connected to the torque sensor 22, so that when the detection head 21 fails or is damaged due to an excessive load, the detection head can be replaced conveniently, thereby avoiding replacing the torque sensor 22 and reducing the detection cost; meanwhile, the whole structure is simple, and the assembly and disassembly are convenient.

Further, referring to fig. 7, one of the torque sensor 22 and the detection head 21 is provided with a connection hole 213, and the other of the torque sensor 22 and the detection head 21 is provided with a connection shaft 221 fitted with the connection hole 213. For example, as shown in fig. 7, a connection hole 213 is formed on the detection head 21, a connection shaft 221 is formed on the torque sensor 22, and the connection shaft 221 is adapted to be inserted into the connection hole 213; or the connection shaft 221 may be formed on the detection head 21 and the connection hole 213 may be formed on the torque sensor 22, so that the structure is simple and the assembly and disassembly are convenient.

Further, referring to fig. 7, the cross section of the connecting shaft 221 may be formed to be non-circular, and the cross section of the connecting hole 213 is formed to be non-circular and adapted to the shape of the connecting shaft 221, so that the relative stationary state of the detection head 21 and the torque sensor 22 in the circumferential direction can be ensured as much as possible, and the increase of detection error caused by the relative movement of the detection head 21 and the torque sensor can be avoided.

For example, the cross section of the connecting shaft 221 may have a square, triangular, or other polygonal shape, and the cross section of the connecting hole 213 has a shape matched with the cross section of the connecting shaft 221; alternatively, the cross section of the connecting shaft 221 and the connecting hole 213 may be irregular or have other shapes to ensure that the detecting head 21 and the torque sensor 22 are kept in a relatively stationary state in the circumferential direction as much as possible.

Alternatively, the cross-section of the connection shaft 221 and the connection hole 213 may be formed substantially in a circular shape, and at least a portion of the circumferential wall of the connection shaft 221 in the axial direction may be formed with a stopper protrusion (not shown) extending outward in the radial direction, and the inner wall of the connection hole 213 may be formed with a stopper groove (not shown) recessed outward in the radial direction, and when the connection shaft 221 is inserted into the connection hole 213, the stopper protrusion and the stopper groove are engaged with each other to achieve relative rest of the detection head 21 and the torsion sensor in the circumferential direction.

In a specific example, the detection head 21 and the torque sensor 22 are integrally formed, so that on one hand, the manufacturing is convenient, and on the other hand, the synchronous torsion of the detection head 21 and the torque sensor 22 can be ensured, so that the measured data is more accurate and reliable, and the stress condition of the spindle 206 in the working state can be more truly reflected.

According to some embodiments of the present invention, referring to fig. 3, 5 and 7, one end of the main shaft 206 in the axial direction is provided with a chuck 207, the chuck 207 may be used for clamping a tool, and the detection head 21 may include: the holder body 212 and the detection needle 211, specifically, the detection needle 211 is disposed on the holder body 212, the detection needle 211 is suitable for being clamped by the chuck 207 in the operating state of the torsion detection apparatus 100, and the holder body 212 is connected to the torque sensor 22.

For example, as shown in fig. 2 and 3, a collet 207 is formed at the lower end of the spindle 206, and the collet 207 may be configured with a plurality of jaws that can be opened and closed. In operation of the machining apparatus 1000, the jaws are in clamping engagement with the tool to ensure synchronous movement of the tool and jaws. The detection head 21 includes a holder body 212 and a detection needle 211, the detection needle 211 is formed in a needle bar shape, the detection needle 211 is suitable for being clamped by the chuck 207, the holder body 212 is formed in a column shape, the outer diameter of the holder body 212 is far larger than that of the detection needle 211, the lower end of the detection needle 211 is fixedly connected with the holder body 212, and a connection hole 213 is formed at the inner side of the holder body 212. In this way, since the detection pin 211 is thin and can be directly clamped by the chuck 207 of the main shaft 206, the structure for connecting the main shaft 206 and the torque sensor 22 via the detection head 21 is simpler than the structure for connecting the main shaft 206 and the torque sensor 22 via a coupling in the related art.

According to some embodiments of the present invention, referring to fig. 3 to 7, the driving unit 1 may include: a linear actuator having a telescopic piston rod and a connecting rod 12; the connecting rod 12 is pivotally connected at one end to the piston rod and at the other end to the torque sensor 22. Specifically, the linear actuator may employ a driving cylinder 11, the driving cylinder 11 has a telescopic cylinder piston 13, one end of a connecting rod 12 is pivotally connected with the cylinder piston 13, the other end of the connecting rod 12 is in transmission connection with a torque sensor 22, at this time, the torque sensor 22 may be rotatably fixed to the table 201 so that, when the cylinder piston 13 is driven to make telescopic movement by the driving cylinder 11, the cylinder piston 13 can drive the connecting rod 12 to swing arm, the connecting rod 12 can drive the torsion sensor to rotate in a certain angle range, therefore, torque is applied to the detection head 21, damage to the spindle 206 and the chuck 207 thereof caused by excessive relative movement of the detection head 21 and the spindle 206 can be avoided, the torsional deformation process of the detection head 21 and the torsion sensor can be controlled, and failure caused by excessive deformation can be avoided. Of course, the linear drive can also be an electric or hydraulic cylinder.

Further, the driving cylinder 11 is provided with a speed regulating valve 111, and the speed regulating valve 111 can be used for regulating the movement speed of the cylinder piston 13, so that the rotating speed of the detection head 21 can be regulated, and the detection unit 2 or the main shaft 206 is prevented from being damaged due to excessive instantaneous torsion.

In other embodiments, the driving unit 1 may include: and a rotary driver (not shown), wherein the output end of the rotary driver is in transmission connection with the torque sensor 22, and the output end of the rotary driver drives the torque sensor 22 to rotate when rotating. The rotary driver can adopt a driving motor or a rotary air cylinder, and one end of an output shaft of the driving motor or the rotary air cylinder can be connected with the torque sensor 22 through a coupler, so that the driving unit 1 can drive the detection unit 2 to rotate. Alternatively, the drive motor may employ a stepping motor.

According to some embodiments of the present invention, the torque sensor 22 is a static torque sensor 22, so that the measured data is more accurate, and can reflect the torque force applied to the tool moving relative to the spindle 206 in the real working state, thereby determining the clamping performance of the spindle 206 on the tool.

In some embodiments, referring to fig. 5 and 7, the torsion detecting apparatus 100 may further include: a rotary table 3. Specifically, carousel 3 is established on torque sensor 22, carousel 3 links to each other with torque sensor 22, carousel 3 is located torque sensor 22's along axial both sides respectively with detecting head 21, drive unit 1 is established in the one side of keeping away from torque sensor 22 of carousel 3, drive unit 1 links to each other with carousel 3 and rotates with drive detecting element 2, that is to say, drive unit 1 rotates through drive carousel 3 and drives detecting element 2 motion, therefore, can make things convenient for the connection of drive unit 1 and detecting element 2, avoid because the special configuration of torque sensor 22 leads to with drive unit 1 be difficult to the problem of direct connection.

Further, referring to fig. 1 and fig. 3 to 5, the torsion detecting apparatus 100 may further include: and a fixing plate 4. Specifically, the fixed plate 4 is disposed on the workbench 201, the detecting unit 2 and the driving unit 1 are disposed on two opposite sides of the fixed plate 4 in the thickness direction, for example, the detecting unit 2 is disposed on the upper side of the fixed plate 4, the driving unit 1 can be disposed on the lower side of the fixed plate 4, the driving unit 1 can be fixedly connected to the fixed plate 4, for example, the driving unit 1 can be bolted to the fixed plate 4, the avoiding hole 41 can be formed on the fixed plate 4, the avoiding hole 41 can penetrate through the fixed plate 4 in the thickness direction, and at least a portion of the turntable 3 can be rotatably received in the avoiding hole 41, thereby facilitating the fixing of the driving unit 1 and the detecting unit 2, and simultaneously, the overall structure of the torque detecting device 100 is compact and occupies a small space.

For example, as shown in fig. 3 and 5, the fixing plate 4 may be formed as a square plate, a circular avoiding hole 41 penetrating in the thickness direction is formed on the fixing plate 4, the rotary plate 3 is rotatably fitted in the avoiding hole 41, the avoiding hole 41 is shaped to match the shape of the rotary plate 3, the rotary plate 3 includes a plate body 33 and a rotary shaft 31, one side of the plate body 33 is connected to the torque sensor 22, the rotary shaft 31 is formed on the side of the plate body 33 facing away from the torque sensor 22, the mounting hole 32 is defined on the inner side of the rotary shaft 31, the driving unit 1 is disposed on the lower side of the fixing plate 4, the fitting shaft 121 is formed at one end of the connecting rod 12, the cross-sections of the mounting hole 32 and the fitting shaft 121 are both non-circular, the fitting shaft 121 is adapted to fit in the mounting hole 32, and therefore, the transmission connection between the rotary plate 3 and the connecting rod 12 can be realized through the connection mechanism formed by the fitting of the mounting hole 32 and the fitting shaft 121, the connecting rod 12 can drive the rotary disc 3 to rotate under the driving of the driving cylinder 11, and further drive the detection unit 2 to rotate. Of course, the present invention is not limited thereto, and the fixing plate 4 may be formed in other shapes.

Of course, when the driving unit 1 adopts a rotary driver, a matching shaft may also be formed on the output end of the rotary driver, and the matching shaft matches with the mounting hole 32 formed on the rotary disc 3, so that the transmission connection between the rotary disc 3 and the rotary driver can be realized through the connecting mechanism formed by matching the mounting hole 32 and the matching shaft 121.

According to some embodiments of the present invention, referring to fig. 1, the workbench 201 has a workpiece placement area 2011, the workpiece placement area 2011 is used for placing a workpiece to be processed, the spindle 206 can move to the workpiece placement area 2011 to process the workpiece, and the torsion detection apparatus 100 is disposed on one side of the workpiece placement area 2011 in the horizontal direction, for example, as shown in fig. 1, the torsion detection apparatus 100 can be disposed on the front side of the workpiece placement area 2011, and the fixing plate 4 is disposed on the front side of the workpiece placement area 2011 and flush with the upper surface of the workpiece placement area 2011, so that the spindle 206 can be conveniently moved to the torsion detection apparatus 100 for detection, and the arrangement position of the fixing plate 4 does not affect the movement of the spindle 206.

A processing apparatus 1000 according to an embodiment of the second aspect of the present invention is described below with reference to fig. 1 to 7.

The processing apparatus 1000 according to the embodiment of the second aspect of the present invention includes: a machine table, a workbench 201, a spindle 206 and the torsion detecting apparatus 100 according to the above embodiment of the invention.

According to the processing equipment 1000 of the embodiment of the invention, by arranging the torsion detection device 100 of the embodiment, the torsion borne by the tool in the motion relative to the main shaft 206 in the actual working state can be detected, so that the clamping performance of the main shaft 206 on the tool can be accurately judged, and the reliability and the yield of the processing equipment 1000 can be ensured.

In one embodiment, the processing apparatus may include a stage, a table 201, a torque detection device 100, and a spindle 206. The machine table can comprise a machine body 200 and a cross beam 202, the workbench 201 and the cross beam 202 are both arranged on the machine body 200, a moving mechanism is arranged on the cross beam 202, and the main shaft 206 can be arranged on the moving mechanism. The moving mechanism may include: mounting plate 203, clamping member 204, and pressure plate 205. A first slide rail extending along the transverse direction is formed on the cross beam 202, the mounting plate 203 is used for mounting the main shaft 206, a sliding groove suitable for being in sliding fit with the first slide rail is formed at the back of the mounting plate 203, the mounting plate 203 is in sliding fit with the first slide rail along the transverse direction, and a second slide rail extending along the vertical direction is formed at the front side of the mounting plate 203; the clamping member 204 is movably engaged with the second slide rail in the vertical direction, at least a portion of the main shaft 206 along the axial direction is clamped on the clamping member 204, and the pressing plate 205 is covered on the clamping member 204 and is in press fit with the main shaft 206.

Alternatively, the number of the spindles 206 may be multiple, the mounting plate 203 includes multiple ones corresponding to the spindles 206 one to one, correspondingly, the clamping members 204 and the pressing plates 205 each include multiple ones corresponding to the spindles 206 one to one, the multiple spindles 206 are arranged at intervals along the extending direction of the cross beam 202, multiple workpiece placing areas 2011 corresponding to the spindles 206 one to one are formed on the table 201, the torsion detecting devices 100 also include multiple ones corresponding to the spindles 206 one to one, and each torsion detecting device 100 is arranged at the front side of the corresponding workpiece placing area 2011, so that the machining apparatus 1000 may machine multiple workpieces at the same time, and the torsion detecting devices 100 may also detect the multiple spindles 206 at the same time.

Other configurations of the processing device 1000 according to embodiments of the present invention, such as an electronic control unit and a chip ejection unit, etc., and operations thereof, are known to those of ordinary skill in the art and will not be described in detail herein.

A torsion detecting method for a machining apparatus 1000 according to an embodiment of the third aspect of the present invention is described below with reference to fig. 8 and 9.

According to the torque force detection method for the processing apparatus 1000 in the third embodiment of the present invention, the processing apparatus 1000 is the processing apparatus 1000 according to the above embodiment of the present invention, and the torque force detection method is used for detecting the torque force applied to the tool when the tool moves relative to the spindle 206, in other words, the torque force detection method can detect the clamping force provided by the spindle 206 for the tool in the real working state.

The torsion detection method may include the steps of: detecting and acquiring the working time of the spindle 206 to reach the preset time, detecting whether the spindle 206 clamps the tool, and if the spindle 206 clamps the tool, controlling the spindle 206 to withdraw from the tool; controlling the spindle 206 to move to the detection position; controlling the spindle 206 to clamp the detection head 21; the driving unit 1 is controlled to work to drive the detection unit 2 to rotate, and the torque sensor 22 outputs an electric signal.

Specifically, whether the working time of the spindle 206 reaches a preset time is detected, where the preset time is a detection period set for the spindle 206, that is, a time interval between two detections, and if the working time of the spindle 206 reaches the preset time, it is determined whether the spindle 206 is currently in a working state, that is, whether a workpiece is currently processed, and if the spindle 206 is currently in the working state, the torque detection apparatus 100 is controlled to start a detection program after the current workpiece is processed; if the main shaft 206 is not in the working state, the torque detection apparatus 100 is controlled to directly enter the detection procedure.

After entering the detection program, firstly detecting whether the main shaft 206 clamps the tool, if the main shaft 206 clamps the tool, the tool can be withdrawn to a tool magazine, and then the next detection step is carried out; if the spindle 206 does not clamp the tool, the next detection step may be directly performed, that is, the spindle 206 is controlled to move along the X axis and the table 201 moves along the Y axis respectively, so that the spindle 206 may reach right above the torque detection apparatus 100, then the spindle 206 is controlled to descend along the Z axis to a detection position (the detection position here refers to a position where the chuck 207 of the spindle 206 can just clamp the detection needle 211 on the detection head 21 of the torque detection apparatus 100), then the spindle 206 is controlled to clamp the detection head 21, then the driving unit 1 is controlled to drive the detection unit 2 to rotate, when the detection unit 2 rotates, the torque sensor 22 deforms to a certain extent, and the torque sensor 22 may convert the deformation into an electrical signal to be output.

For example, the chuck 207 of the control spindle 206 can clamp the detection pin 211 on the detection head 21, the control driving cylinder 11 drives the cylinder piston 13 to perform telescopic motion, the cylinder piston 13 pushes the connecting rod 12 to drive the turntable 3 to rotate, the turntable 3 can drive the torque sensor 22 to rotate, at this time, the beam body inside the torque sensor 22 can deform, so that the sensing piece attached to the beam body deforms according to a multiple response, and a detection voltage signal is output.

According to the torsion detection method provided by the embodiment of the invention, the torsion borne by the tool in the real working state when moving relative to the main shaft 206 can be detected and obtained, so that whether the main shaft 206 can provide enough clamping force for the tool can be accurately judged to ensure the machining precision of the tool, the problem of the main shaft 206 can be timely found and solved, the yield of products produced by the machining equipment 1000 can be improved, and meanwhile, compared with a manual detection mode adopted in the related technology, the torsion detection method can obviously improve the detection efficiency and the accuracy of a detection result, and the labor cost is saved.

Further, the torsion detection method may further include; acquiring an electric signal output by the torque sensor 22, wherein the electric signal is a detection voltage signal value; judging and comparing the magnitude of the detection voltage signal value with a preset voltage signal value; if the detected voltage signal value is greater than the preset voltage signal value, the spindle 206 is in a normal state and controls the torque detection device 100 to exit the detection; if the detected voltage signal value is smaller than the preset voltage signal value, the spindle 206 is in an abnormal state and gives an alarm prompt.

Specifically, the torque sensor 22 may feed back a detection signal to the control module, and the control module compares and analyzes a detection voltage signal value of the torque sensor 22 corresponding to the main shaft 206 with a preset voltage signal value. If the detection voltage signal value of the torque sensor 22 is lower than the preset voltage signal value, it is indicated that the spindle 206 cannot provide enough clamping force for the tool, at this time, the spindle 206 is in an abnormal state, the control module outputs a low level to the control system, the machine alarms, and prompts an operator that the spindle 206 has a problem, so that the operator can check and maintain the spindle 206 in time, and the operator can detect again after finishing the maintenance according to the prompt, thereby avoiding the scrapping caused by the poor processing precision of the plate. If the detection voltage signal value of the torque sensor 22 is higher than the preset voltage signal value, it indicates that the spindle 206 can provide sufficient torque for the tool, the spindle 206 is in a normal state, the control module outputs a high level to the control system, the control system controls to open the chuck 207 of the spindle 206, so that the spindle 206 retracts to a processing position, and simultaneously controls the cylinder piston 13 of the driving cylinder 11 to retract, so that the detection is completed, and the spindle 206 can perform normal processing.

A processing apparatus 1000 and a torque force detection method thereof according to an embodiment of the present invention will be described with reference to fig. 1 to 9.

In the first embodiment, the first step is,

the processing apparatus 1000 of the present embodiment includes: a machine table, a workbench 201, a spindle 206 and a torsion detection device 100.

The machine table comprises a machine body 200 and a cross beam 202, the cross beam 202 and a workbench 201 are arranged on the machine body 200, a moving mechanism is arranged on the cross beam 202, and a main shaft 206 is arranged on the moving mechanism. Specifically, the moving mechanism includes: mounting plate 203, clamping member 204, and pressure plate 205. The moving mechanism is movably arranged on the cross beam 202, a first sliding rail extending along the transverse direction is formed on the cross beam 202, the mounting plate 203 is used for mounting the main shaft 206, a sliding groove suitable for being in sliding fit with the first sliding rail is formed in the back of the mounting plate 203, the mounting plate 203 is in sliding fit with the first sliding rail along the transverse direction, and a second sliding rail extending along the vertical direction is formed in the front side of the mounting plate 203; the clamping piece 204 is movably matched with the second sliding rail along the vertical direction, at least part of the main shaft 206 along the axial direction is clamped on the clamping piece 204, the pressing plate 205 is covered on the clamping piece 204 and is in press fit with the main shaft 206, and the lower end of the main shaft 206 is provided with a clamp 207 capable of opening and closing.

A workpiece placement area 2011 is formed on the table 201, and the torsion detection device 100 is disposed on the front side of the corresponding workpiece placement area 2011.

The torsion detecting apparatus 100 includes: a drive unit 1, a detection unit 2, a turntable 3 and a fixing plate 4.

Wherein the detection unit 2 includes: a detection head 21 and a torque sensor 22. The detection head 21 includes: the detection device comprises a base body 212 and a detection needle 211, wherein the detection needle 211 is in a needle rod shape, the detection needle 211 is suitable for being clamped by a clamping head 207, the base body 212 is in a column shape, the outer diameter of the base body 212 is far larger than that of the detection needle 211, the lower end of the detection needle 211 is fixedly connected with the base body 212, a connecting hole 213 is formed in the inner side of the base body 212, the cross section of the connecting hole 213 is in a square shape, a connecting shaft 221 matched with the connecting hole 213 is formed in the torque sensor 22, the connecting shaft 221 is suitable for being inserted into the connecting hole 213, the rotary disc 3 is arranged on the torque sensor 22, and the rotary disc 3 and the detection head 21 are respectively located on two sides of the torque sensor 22 along the axial direction.

The fixed plate 4 is fixedly arranged on the front side of the workbench 201, the fixed plate 4 is formed into a square flat plate, an avoiding hole 41 penetrating along the thickness direction is formed in the fixed plate 4, the avoiding hole 41 is rotatably formed in the rotary disc 3, the shape of the rotary disc 3 is matched with the shape of the avoiding hole 41, the rotary disc 3 comprises a disc body 33 and a rotary shaft 31, one side of the disc body 33 is connected with the torque sensor 22, the side, deviating from the torque sensor 22, of the disc body 33 is formed with the rotary shaft 31, the inner side of the rotary shaft 31 defines a mounting hole 32, and the cross section of the mounting hole 32 is formed into a square shape.

The drive unit 1 may include: the cylinder 11 and the connecting rod 12 are driven. The driving cylinder 11 is provided with a telescopic cylinder piston 13, one end of a connecting rod 12 is pivotally connected with the cylinder piston 13, the other end of the connecting rod 12 is provided with a matching shaft 121, the matching shaft 121 is matched with the mounting hole 32 in shape, and the matching shaft 121 is suitable for being matched in the mounting hole 32.

The torsion detection method of the processing apparatus 1000 of the present embodiment is as follows:

specifically, it is first detected whether the working time of the spindle 206 reaches a preset time, where the preset time is a detection period set for the spindle 206, and if the working time of the spindle 206 reaches the preset time, it is determined whether the spindle 206 is currently in a working state, that is, whether a workpiece is currently being processed, and if the spindle 206 is currently in the working state, the torque detection apparatus 100 is controlled to start a detection program after the current workpiece is completely processed; if the main shaft 206 is not in the working state, the torque detection apparatus 100 is controlled to directly enter the detection procedure.

After entering the detection program, firstly detecting whether the main shaft 206 clamps the tool, if the main shaft 206 clamps the tool, the tool can be withdrawn to a tool magazine, and then the next detection step is carried out; if the spindle 206 does not clamp the tool, the next detection step can be directly performed, i.e. the spindle 206 is controlled to move along the X axis and the worktable 201 moves along the Y axis respectively, so that the spindle 206 can reach the position right above the torsion detection apparatus 100, then the main shaft 206 is controlled to descend to a detection position along the Z axis (the detection position refers to a position where the chuck 207 of the main shaft 206 can just clamp the detection needle 211 on the detection head 21 of the torsion detection apparatus 100), then the main shaft 206 is controlled to clamp the detection needle 211 on the detection head 21, the driving cylinder 11 is controlled to drive the cylinder piston 13 to perform telescopic motion, the cylinder piston 13 pushes the connecting rod 12 to drive the rotary table 3 to rotate, the rotary table 3 can drive the torque sensor 22 to rotate, at this time, the beam body inside the torque sensor 22 deforms, so that the sensing piece attached to the beam body deforms according to a certain multiple response, and a voltage signal is output.

The torque sensor 22 may feed back the detection signal to the control module, and the control module compares and analyzes the detection voltage signal value of the torque sensor 22 corresponding to each spindle 206 with a preset voltage signal value. If the detection voltage signal value of the torque sensor 22 is lower than the preset voltage signal value, it is indicated that the spindle 206 cannot provide sufficient clamping force for the tool, at this time, the spindle 206 is in an abnormal state, the tool may not meet the requirement on machining precision, the control module outputs a low level to the control system, the machine alarms, and prompts an operator which spindle 206 has a problem, so that the operator can check and maintain the spindle 206 in time, the operator detects again after finishing the maintenance according to the prompt, and scrapping caused by poor plate machining precision is avoided. If the detection voltage signal value of the torque sensor 22 is higher than the preset voltage signal value, it indicates that the spindle 206 can provide sufficient torque for the tool, the spindle 206 is in a normal state, the control module outputs a high level to the control system, the control system controls to open the chuck 207 of the spindle 206, so that the spindle 206 retracts to a processing position, and simultaneously controls the cylinder piston 13 of the driving cylinder 11 to retract, so that the detection is completed, and the spindle 206 can perform normal processing.

In the second embodiment, the first embodiment of the method,

the processing apparatus 1000 in this embodiment has the same structure as the processing apparatus 1000 in the first embodiment, and the torsion detecting method for the spindle 206 of the processing apparatus 1000 in this embodiment is as follows:

firstly, detecting whether the working time of the main shaft 206 reaches a preset time, wherein the preset time is a detection period set for the main shaft 206, if the working time of the main shaft 206 reaches the preset time, judging whether the main shaft 206 is currently in a working state, namely whether a workpiece is currently machined, and if the main shaft 206 is currently in the working state, controlling the torque detection device 100 to start a detection program after finishing machining the current workpiece; if the main shaft 206 is not in the working state, the torque detection apparatus 100 is controlled to directly enter the detection procedure.

After entering the detection program, firstly detecting whether the main shaft 206 clamps the tool, if the main shaft 206 clamps the tool, the tool can be withdrawn to a tool magazine, and then the next detection step is carried out; if the spindle 206 does not clamp the tool, the next detection step can be directly performed, that is, the spindle 206 is controlled to move along the X axis and the worktable 201 moves along the Y axis respectively, so that the spindle 206 can reach the position right above the torque detection device 100, then the spindle 206 is controlled to descend along the Z axis to a detection position (the detection position refers to a position where the chuck 207 of the spindle 206 can just clamp the detection needle 211 on the detection head 21 of the torque detection device 100), then the spindle 206 is controlled to clamp the detection needle 211 on the detection head 21, the driving motor is controlled to start, the driving rod is driven by the driving motor to drive the torque sensor 22 to rotate in a small angle, at this time, the beam body inside the torque sensor 22 deforms, so that the sensing piece attached to the beam body responds to deform according to a certain multiple, and an analog voltage signal is output.

The torque sensor 22 may collect the analog voltage signal by the lower computer analog quantity collecting module and send the analog voltage signal to the upper computer, and the analog voltage signal value of each spindle 206 is compared and analyzed with the preset voltage signal value by the upper computer software. If the analog voltage signal value output by the torque sensor 22 is lower than the preset voltage signal value, it indicates that the spindle 206 cannot provide enough clamping force for the tool, at this time, the spindle 206 is in an abnormal state, the upper computer software gives an alarm and prompts an operator which spindle 206 has a problem, so that the operator can check and maintain the spindle 206 in time, and the operator can detect again after finishing the maintenance according to the prompt, thereby avoiding the scrapping caused by the poor plate precision. If the analog voltage signal value output by the torque sensor 22 is higher than the preset voltage signal value, it indicates that the spindle 206 can provide sufficient clamping force for the tool, the spindle 206 is in a normal state, the upper computer outputs a signal to the control system, and the control system controls to open the chuck 207 of the spindle 206, so that the spindle 206 retracts to a machining position, and controls the cylinder piston 13 of the driving cylinder 11 to retract, thereby completing detection, and the spindle 206 can perform normal machining. The upper computer software can realize the recording function, and the data of the clamping force of the clamping head 207 of the main shaft 206 in a period of time is made into a table/data, so that the analysis is convenient.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a torsion detection device of processing equipment, its characterized in that, processing equipment include board, workstation, main shaft and torsion detection device, the workstation with the main shaft is all movably located the board, torsion detection device locates the workstation, torsion detection device is used for detecting the cutter relatively the torsion that receives during the main shaft motion, torsion detection device includes:

the driving unit is arranged on the workbench;

the detection unit comprises a detection head and a torque sensor, the detection head is arranged on the torque sensor, the driving unit is connected with the torque sensor to drive the detection unit to rotate, and the detection head is suitable for being detachably connected with the spindle in the working state of the torque detection device;

when the main shaft is not in a working state, the main shaft is controlled to move to a detection position and clamp the detection head, the driving unit drives the torque sensor to rotate, and whether the main shaft can provide enough clamping force or not is judged according to feedback of the torque sensor.

2. The torque detection device of a processing apparatus according to claim 1, wherein the detection head is detachably connected to the torque sensor.

3. The torsion detecting device of a processing apparatus according to claim 2, wherein one of the torque sensor and the detecting head is provided with a connecting hole, and the other of the torque sensor and the detecting head is provided with a connecting shaft engaged with the connecting hole.

4. The torsion detecting device of a processing apparatus according to claim 3, wherein a cross section of the connecting shaft is formed in a non-circular shape, and a cross section of the connecting hole is formed in a non-circular shape and adapted to a shape of the connecting shaft.

5. The torsion detecting apparatus of a processing apparatus according to claim 1, wherein the detecting head is integrally formed with the torque sensor.

6. The torsion detecting device for a machining apparatus according to claim 1, wherein a chuck for clamping a tool is formed at one end of the spindle in the axial direction, and the detecting head includes: the base body is connected with the torque sensor, the detection needle is arranged on the base body, and the detection needle is suitable for being clamped by the chuck under the working state of the torque detection device.

7. The torque force detection device of a processing apparatus according to any one of claims 1 to 6, wherein the drive unit includes:

a linear actuator having a telescoping piston rod;

one end of the connecting rod is pivotally connected with the piston rod, and the other end of the connecting rod is connected with the torque sensor;

alternatively, the driving unit includes:

the output end of the rotary driver is connected with the torque sensor, and the output end of the rotary driver drives the torque sensor to rotate when rotating.

8. The torque detection device according to claim 7, wherein the linear actuator is an air cylinder, an electric cylinder, or a hydraulic cylinder, and the rotary actuator is a driving motor or a rotary air cylinder.

9. The torque detection device of a processing apparatus according to claim 7, further comprising: the carousel, the carousel is established torque sensor is last, the carousel with it is located respectively to detect the head torque sensor's axial both sides, the drive unit establishes keeping away from of carousel torque sensor's one side, the drive unit with the carousel links to each other in order to drive the detecting element rotates.

10. The torque detection device of a processing apparatus according to claim 9, further comprising: the fixed plate, the fixed plate is established on the workstation, the detecting element with the drive unit is established respectively the ascending relative both sides of fixed plate thickness direction, be formed with on the fixed plate and dodge the hole, at least some of carousel rotationally hold in dodge the hole, the workstation has the work piece and places the district, the fixed plate is established the work piece is placed the district and is distinguished one side on the horizontal direction.

11. The torque detection device according to claim 10, wherein a connection mechanism is disposed between the turntable and the connecting rod or between the turntable and the output end of the rotary driver, the connection mechanism includes a mounting hole disposed on the turntable and a fitting shaft disposed on the connecting rod or the output end of the rotary driver, and the fitting shaft is adapted to fit in the mounting hole.

12. A processing apparatus, comprising: the torsion detection apparatus according to any one of claims 1 to 11.

13. A torsion detecting method for a machining apparatus according to claim 12, wherein the torsion detecting method is used for detecting torsion applied to a tool moving relative to the spindle, and the torsion detecting method comprises the steps of:

detecting and acquiring the working time of the main shaft to reach the preset time;

detecting whether the main shaft clamps a cutter or not, and if the main shaft clamps the cutter, controlling the main shaft to withdraw the cutter;

controlling the spindle to move to a detection position;

controlling the main shaft to clamp the detection head;

and controlling the driving unit to work so as to drive the detection unit to rotate, and judging the torque value according to the electric signal output by the torque sensor.

14. The torque force detection method for a processing apparatus according to claim 13, comprising;

acquiring an electric signal output by the torque sensor, wherein the electric signal is a detection voltage signal value;

judging and comparing the magnitude of the detection voltage signal value with a preset voltage signal value;

if the detection voltage signal value is larger than the preset voltage signal value, the spindle is in a normal state and controls the torque detection device to quit detection;

and if the detection voltage signal value is smaller than the preset voltage signal value, the spindle is in an abnormal state and gives an alarm prompt.