CN220251266U - Calibration instrument for six-axis tightening machine - Google Patents

Abstract

The utility model belongs to the technical field of tightening machine performance detection equipment, and discloses a calibration instrument for a six-axis tightening machine. The automatic calibration device mainly comprises a calibration disc and a charging station for wirelessly charging the calibration disc, wherein the calibration disc comprises a support circular plate and an upper cover shell, six connecting arms are connected with inner hexagonal mounting holes on the support circular plate, an analog connecting bolt is arranged in each inner hexagonal mounting hole through an outer hexagonal nut, a rigid analog connecting pipe fitting is sleeved on the analog connecting bolt, a torque sensor is arranged in each protective cover shell, the six torque sensors are respectively connected with the analog connecting bolt through outer hexagonal connectors, and 6-axis spanner data of a tightening machine are synchronously transmitted to a calibration instrument controller through a wireless acquisition module, so that 6 shafts of the field tightening machine can be calibrated simultaneously. The calibration disc is free of cable constraint, and is free and flexible to move and install; meanwhile, the operation time is simplified, and the calibration period is saved.

Description

Calibration instrument for six-axis tightening machine

Technical Field

The utility model belongs to the technical field of tightening machine performance detection equipment, and particularly relates to a calibration instrument for a six-axis tightening machine.

Background

Currently, as trains progress toward high speed, heavy load, disc braking is increasingly becoming the dominant form of train braking. The brake disc is used as a key component of a high-speed train, and is arranged on the side surface of a wheel through a plurality of groups of bolt fasteners, and the brake disc is mainly rubbed with brake pads to enable the train to be decelerated or stopped within a specified braking distance, so that the performance of the brake disc fasteners directly influences the running condition of the train and the life safety of passengers.

In order to reduce the working strength of bolt fastening during on-site brake disc assembly and simplify the operation time, the six-shaft tightening machine is adopted by the company to realize automatic assembly during brake disc assembly. However, under the frequent braking working condition, the bolt fastener can bear huge alternating load, the service environment is bad, and high requirements are put on the performance and the assembly of the brake disc fastener. Therefore, torque testing, calibration and verification of six-axis tightening machines is critical. At present, a dynamic torque calibration instrument is used for calibrating a six-axis tightening machine on site, but when the dynamic torque calibration instrument faces to the calibration of the six-axis tightening machine, the problems of cable constraint and repeated calibration exist, and the requirement of simultaneous calibration of 6 axes of the field tightening machine cannot be met. Therefore, this calibration method is difficult to achieve the simplification of the operation time and the saving of the calibration period.

Disclosure of Invention

The method aims at solving the problem that the existing dynamic torque calibration instrument in the background art cannot meet the requirement that 6 shafts of a tightening machine can be calibrated simultaneously when being calibrated by the six-shaft tightening machine. For this purpose, the utility model provides a calibration instrument for a six-axis tightening machine.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the calibrating instrument for the six-shaft tightening machine comprises a calibrating disc and a charging station for charging the calibrating disc in a wireless charging mode, wherein a controller of the calibrating instrument is arranged on the charging station through a cantilever, a fixed tray is arranged on the charging station, a round table is arranged on the fixed tray, the calibrating disc is arranged on the fixed tray through the round table, the calibrating disc comprises a bracket circular plate and an upper cover shell corresponding to the bracket circular plate, a first fixed circular hole and a second fixed circular hole corresponding to the round table are respectively arranged in the centers of the bracket circular plate and the upper cover shell, six connecting arms are fixedly connected to the bracket circular plate and are uniformly distributed in the circumferential direction, an inner hexagon mounting hole is fixedly connected to the end part of each connecting arm, a protective cover shell is arranged on the upper cover shell corresponding to each connecting arm, a connecting hole is arranged on the protective cover shell, and the protective cover shell and the inner hexagon mounting hole are positioned on the same axis, a simulated connecting bolt is arranged in each inner hexagonal mounting hole through an outer hexagonal nut, a rigid simulated connecting pipe fitting is sleeved on the simulated connecting bolt, a torque sensor is arranged in each protective cover shell, two ends of a rotating shaft of each torque sensor are respectively connected with an inner hexagonal connector and an outer hexagonal connector, the inner hexagonal connectors are positioned in the connecting holes, the torque sensor is connected with the simulated connecting bolt through the outer hexagonal connectors, a spanner head of a six-shaft tightening machine is connected with the torque sensor through the inner hexagonal connectors, a signal output end of each torque sensor is connected with a wireless acquisition module through a data wire, the wireless acquisition module is embedded on the upper cover shell and connected with a calibration instrument controller through a wireless communication mode, a lithium battery is arranged in the upper cover shell to supply power for the wireless acquisition module and the six torque sensors, the lithium battery is connected with the wireless induction receiving coil and charges the wireless induction receiving coil, the wireless induction receiving coil is arranged on the support circular plate, and a wireless induction transmitting coil matched with the wireless induction receiving coil is arranged on the fixed tray.

As a further supplementary illustration of the above technical solution, a protective sleeve is provided on each connecting arm, said protective sleeve being located above the hexagonal socket and said protective sleeve and protective cover shell in combination form a protective housing for protecting said torque sensor and analog connecting bolt assembly.

As further explanation and limitation of the technical scheme, the simulation connecting bolt is arranged in the protective sleeve and comprises a simulation bolt column, the lower end of the simulation bolt column is connected with an outer hexagonal nut, an inner hexagonal groove connecting piece corresponding to the outer hexagonal connector is fixedly connected to the top end of the simulation bolt column, a rolling bearing and a disc spring are connected to the simulation bolt column through gaskets, and the rolling bearing is in contact with the protective sleeve.

As a further supplementary explanation of the above technical solution, at least two pin holes are provided in the bracket circular plate, positioning pins are respectively installed in the pin holes, and positioning holes corresponding to the positioning pins are provided in the fixed tray.

As a further supplementary illustration of the above technical solution, a tool magazine and a drawer are respectively provided at the front end of the charging station, both of which are used for placing the calibration wrench tool.

Compared with the prior art, the calibration disc designed by the utility model has the following advantages:

1. the calibration disc comprises a support circular plate and an upper cover shell, wherein six connecting arms are respectively and fixedly connected with an inner hexagonal mounting hole, a simulation connecting bolt is arranged in each inner hexagonal mounting hole through an outer hexagonal nut, a rigid simulation connecting pipe fitting is sleeved on the simulation connecting bolt, a torque sensor is arranged in each protection cover shell, each torque sensor is connected with the simulation connecting bolt through an outer hexagonal connector, a spanner head of a six-axis tightening machine is connected with the torque sensor through the inner hexagonal connector, a signal output end of each torque sensor is connected with a wireless acquisition module through a data line, the wireless acquisition module is connected with a calibration instrument controller in a wireless communication mode, 6 torque sensors of the calibration disc synchronously transmit 6-axis spanner head data of the simulation tightening machine to the calibration instrument controller through the wireless acquisition module, and a calibration report is automatically generated according to the software data summarizing function of the calibration controller without manual intervention. According to the utility model, in the process that 6 shafts of a field tightening machine can be calibrated simultaneously, no cable is bound, and the movable installation is more free and flexible; meanwhile, the operation time is simplified, and the calibration period is saved.

2. The utility model also designs a wireless charging station for the calibration disc, wherein a wireless induction receiving coil is arranged on the support disc, a wireless induction transmitting coil matched with the wireless induction receiving coil is arranged on the fixed tray, so that a wireless charging mode is formed to charge the lithium battery, and the wireless acquisition module and the six torque sensors are powered by the lithium battery. According to the utility model, the time that the calibration disc is placed on the fixed tray can be utilized to wirelessly charge the calibration disc, so that the problem that the calibration disc cannot be used normally due to forgetting to charge is avoided.

3. The utility model installs the locating pin on the bracket circular plate through the pin hole, and at the same time, there is a locating hole corresponding to the locating pin on the fixed tray. According to the utility model, the calibration disc can be used for carrying out position rapid alignment on the wireless induction receiving coil and the wireless induction transmitting coil through the positioning pin, positioning can be realized by utilizing the matching of the positioning pin and the pin holes on the tooling disc, and whether the positioning pin is inserted into the pin holes is detected under the detection of 4 customized proximity switches arranged on the middle disc of the tooling disc in the up-down left-right direction, so that the aim of effectively attaching the calibration disc and the tooling disc is fulfilled.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of the structure of a disk of the bracket according to the present utility model;

FIG. 3 is a schematic view of the structure of the upper cover shell in the present utility model;

FIG. 4 is a schematic view of the structure of the calibration disk of the present utility model;

FIG. 5 is a schematic view of the internal assembly of the calibration disk of the present utility model;

FIG. 6 is a schematic view of a simulated connecting bolt according to the present utility model;

FIG. 7 is a schematic diagram of a torque sensor according to the present utility model;

fig. 8 is a schematic structural view of a charging station according to the present utility model.

In the figure: the calibration disc is 1, the charging station is 2, the fixed tray is 3, the round platform is 4, the cantilever is 5, the calibration instrument controller is 6, the wireless acquisition module is 7, the wireless induction receiving coil is 8, the protection sleeve is 9, the outer hexagonal nut is 10, the locating pin is 11, the rigid analog connection pipe fitting is 12, the torque sensor is 13, the analog connecting bolt is 14, the inner hexagonal connector is 15, the outer hexagonal connector is 16, the wireless induction transmitting coil is 17, the locating hole is 18, the tool bin is 19, and the drawer is 20.

Wherein the calibration disk includes: the bracket circular plate is 101, the upper cover shell is 102, the sixth connecting arm is 103, the inner hexagonal mounting hole is 104, the protective cover shell is 105, the connecting hole is 106, one fixed circular hole is 107, the second fixed circular hole is 108, and the pin hole is 109.

Wherein the analog connecting bolt includes: the simulated bolt column is 1401, the inner hexagonal groove connecting piece is 1402, the rolling bearing is 1403, and the disc spring is 1404.

Detailed Description

In order to further illustrate the technical solution of the present utility model, the present utility model will be further illustrated by two examples according to the field calibration implementation with reference to fig. 1 to 8.

Example 1

As shown in fig. 1 to 8, a calibration instrument for a six-axis tightening machine comprises a calibration disc 1 and a charging station 2 for charging the calibration disc in a wireless charging mode, wherein a calibration instrument controller 6 is installed on the charging station 2 through a cantilever 5, a fixed tray 3 is arranged on the charging station 2, a round table 4 is arranged on the fixed tray 3, the calibration disc 1 is placed on the fixed tray 3 through the round table 4, the calibration disc 1 comprises a bracket circular plate 101 and an upper cover shell 102 corresponding to the bracket circular plate, a first fixed circular hole 107 and a second fixed circular hole 108 corresponding to the round table 4 are respectively arranged in the center of the bracket circular plate, six connecting arms 103 are uniformly arranged in the circumferential direction, an inner hexagonal mounting hole 104 is fixedly connected to the end part of each connecting arm 103, a protective cover 105 is arranged on each connecting arm 103, a connecting hole 106 is arranged on the protective cover 105, the protective cover 105 and the inner hexagonal mounting hole 104 are positioned on a coaxial line, a protective sleeve 9 is arranged on each connecting arm 103, a hexagonal connector 9 is positioned on the inner side of the protective cover 9 and the protective cover 4, the inner cover is connected with an inner sensor sleeve 13 through a torque sensor and an outer sensor sleeve 13, an inner sensor is connected with an outer sensor sleeve 13 through a sensing bolt 13, an inner sensor and an outer sensor 14 is connected with an inner sensor 14, a torque simulator is connected with an inner sensor 14, and an outer sensor 14 is connected with an outer sensor 14 through a sensor plug 13 through a sensor 14, and a sensor plug 13 is connected with the inner sensor 14, the signal output end of each torque sensor 13 is connected with a wireless acquisition module 7 through a data line, the wireless acquisition module 7 is embedded on an upper cover shell 102 and is connected with a calibration instrument controller 6 through a wireless communication mode, a lithium battery is arranged in the upper cover shell 102 and is used for supplying power to the wireless acquisition module 7 and the six torque sensors 13, the lithium battery is connected with a wireless induction receiving coil 8 and is used for charging the wireless induction receiving coil 8, the wireless induction receiving coil 8 is arranged on a support circular plate 101, and a wireless induction transmitting coil 17 matched with the wireless induction receiving coil 8 is arranged on a fixed tray 3.

In the above-described embodiment, the protection sleeve 9 and the protection cover 105 are combined to form a protection housing for protecting the assembly of the torque sensor 13 and the analog connection bolt 14. The analog connecting bolt 14 is disposed in the protection sleeve 9, the analog connecting bolt 14 includes an analog bolt pillar 1401, and a lower end thereof is connected with the outer hexagonal nut 10, an inner hexagonal groove connector 1402 corresponding to the outer hexagonal connector 16 is fixedly connected to a top end of the analog bolt pillar 1401, a rolling bearing 1403 and a disc spring 1404 are connected to the analog bolt pillar 1401 through a gasket, and the rolling bearing 1403 is in contact with the protection sleeve 9.

As a further implementation of this embodiment, a tool magazine 19 and a drawer 20 are respectively provided at the front end of the charging station 2, and can be used for placing a calibration wrench tool.

Example two

To further refine the above embodiment, we add a design of the locating pin. The specific implementation mode is as follows: the bracket circular plate 101 is provided with at least two pin holes 109, wherein the positioning pins 11 are respectively arranged, and the fixed tray 3 is provided with positioning holes 18 corresponding to the positioning pins 11. When the locating pin of demarcation dish aligns the locating hole on inserting fixed tray, the line induction receiving coil just in time also aligns with wireless induction transmitting coil's position this moment, just in time can guarantee the validity of wireless charging.

Of course, the locating pin 11 on the calibration disc 1 is also used for matching with the pin hole on the loading disc to realize locating during calibration, and meanwhile, under the detection of 4 customized proximity switches installed on the upper, lower, left and right of the middle disc of the tool disc, the calibration disc is effectively attached to the tool disc, and then the tightening machine is started for calibration test.

In the implementation, the calibration controller adopts the Torque Will 3000 series industrial three-proofing flat-panel controller, is reliable and flexible, is continuously developed according to the requirements of clients on the basis of the original control system software, and communicates with the Harmonious large system to acquire torque and angle data. The charging station design is outside 220V power supply, and when the calibration dish finishes after using, put back the charging station, the charging station can charge the calibration dish through wireless mode of charging.

The calibration mode is as follows: when the torque calibration disc is used for torque calibration, (1) the simulated connecting bolt is firstly manually placed on the base sleeve of the tightening machine, and the outer hexagonal nut is preassembled. (2) And then placing the calibration disc on a tightening table to enable 2 positioning pins to be inserted into positioning holes of the tightening table tool disc, enabling the simulation connecting bolts to enter protective sleeves of torque sensors at corresponding positions of the calibration disc, ensuring that the calibration disc is attached to the tightening table tool disc (if a calibration controller is not attached, an alarm is given, and an enabling signal is sent to an industrial personal computer with a large Ha work to realize interlocking), and (3) lifting the tightening table to the corresponding position, starting a calibration program by the tightening machine, wherein a cap recognition program is adopted at the first stage of the calibration program, and ensuring that a spanner enters into each torque sensor. Because the calibration controller software has a data summarizing function, the data of the calibration disk are acquired through wireless transmission, the data of the tightening machine can be acquired through communication with the Harmonious industrial personal computer, and a calibration report is automatically generated without manual intervention.

While the principal features and advantages of the present utility model have been shown and described, it will be apparent to those skilled in the art that the detailed description of the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other embodiments without departing from the spirit or essential characteristics of the utility model, and the inventive concept and design concept of the utility model shall be equally included in the scope of the utility model disclosed in the appended claims. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (5)

1. A mark appearance for six screw-down machines, its characterized in that: the calibrating device comprises a calibrating disc (1) and a charging station (2) for charging the calibrating disc in a wireless charging mode, wherein a calibrating instrument controller (6) is installed on the charging station (2) through a cantilever (5), a fixed tray (3) is arranged on the charging station (2), a round table (4) is arranged on the fixed tray (3), the calibrating disc (1) is placed on the fixed tray (3) through the round table (4), the calibrating disc (1) comprises a bracket circular plate (101) and an upper cover shell (102) corresponding to the round table, a first fixed round hole (107) and a second fixed round hole (108) corresponding to the round table (4) are respectively arranged in the centers of the bracket circular plate and the round plate, six connecting arms (103) are fixedly connected to the bracket circular plate (101) in a circumferential uniform arrangement mode, an inner hexagonal installation hole (104) is fixedly connected to the end part of each connecting arm (103), a connecting cover (105) is arranged on the upper cover shell (102) corresponding to each connecting arm (103), a connecting hole (106) is arranged on the connecting cover (105), a connecting hole (14) is arranged on the connecting hole (104) and a connecting bolt (14) is arranged on the connecting hole (14) through a coaxial connection bolt, the automatic protection device comprises a protection cover shell (105), torque sensors (13) are installed in the protection cover shell (105), two ends of a rotating shaft of each torque sensor (13) are respectively connected with an inner hexagonal connector (15) and an outer hexagonal connector (16), the inner hexagonal connectors (15) are located in connecting holes (106), the torque sensors (13) are connected with analog connecting bolts (14) through the outer hexagonal connectors (16), a spanner head of a six-shaft tightening machine is connected with the torque sensors (13) through the inner hexagonal connectors (15), a signal output end of each torque sensor (13) is connected with a wireless acquisition module (7) through a data wire, the wireless acquisition module (7) is embedded on an upper cover shell (102) and connected with a calibration instrument controller (6) in a wireless communication mode, a lithium battery is arranged in the upper cover shell (102) and is connected with a wireless induction receiving coil (8) and charges the wireless induction receiving coil, the wireless induction receiving coil (8) is installed on a disc plate (3) and is arranged on the wireless induction receiving coil (17).

2. The calibration instrument for a six-axis tightening machine according to claim 1, wherein: a protective sleeve (9) is arranged on each connecting arm (103), the protective sleeve (9) is positioned above the inner hexagonal mounting hole (104), and the protective sleeve (9) and the protective cover shell (105) are combined to form a protective shell for protecting the torque sensor (13) and the simulation connecting bolt (14) assembly.

3. The calibration instrument for a six-axis tightening machine according to claim 2, wherein: the simulation connecting bolt (14) is arranged in the protection sleeve (9), and comprises a simulation bolt column (1401) and an outer hexagonal nut (10) at the lower end of the simulation bolt column (1401), an inner hexagonal groove connecting piece (1402) corresponding to the outer hexagonal connector (16) is fixedly connected to the top end of the simulation bolt column (1401), a rolling bearing (1403) and a disc spring (1404) are connected to the simulation bolt column (1401) through gaskets, and the rolling bearing (1403) is in contact with the protection sleeve (9).

4. A calibration instrument for a six-axis tightening machine according to any one of claims 1 to 3, characterized in that: at least two pin holes (109) are formed in the support circular plate (101), positioning pins (11) are respectively arranged in the pin holes, and positioning holes (18) corresponding to the positioning pins (11) are formed in the fixed tray (3).

5. The calibration instrument for a six-axis tightening machine according to claim 4, wherein: the front end of the charging station (2) is respectively provided with a tool bin (19) and a drawer (20), and the tool bin and the drawer are used for placing a spanner tool for calibration.