CN110561341B - Automatic press fitting equipment of signal wheel - Google Patents
Automatic press fitting equipment of signal wheel Download PDFInfo
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- CN110561341B CN110561341B CN201910975929.9A CN201910975929A CN110561341B CN 110561341 B CN110561341 B CN 110561341B CN 201910975929 A CN201910975929 A CN 201910975929A CN 110561341 B CN110561341 B CN 110561341B
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- press
- signal wheel
- camshaft
- fitting
- tip
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
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Abstract
The invention provides an automatic press-fitting device for a signal wheel, which comprises: the Z-direction feeding unit comprises: the device comprises a servo electric cylinder, a pressure sensor, an upper tip, a push block, a support and a first linear guide rail; the signal wheel press-fitting and detecting unit comprises: the Z-direction feeding system moves upwards to a proper position, the cam shaft is taken down, and the signal wheel press-mounting and detecting unit controls the workbench to be switched to a sliding force testing position; placing the camshaft on a lower center of a test station, and enabling the Z-direction feeding system to move downwards to enable the camshaft and the signal wheel to generate a movement trend; monitoring the displacement and pressure values in the process through a servo system and a force sensor; and judging whether the pressure value is qualified or not according to the displacement and the pressure value. The invention realizes automatic press mounting and detection, has high equipment integration level and reduces the cost; the press-fitting process is detected through the whole process of the force sensor, so that the press-fitting quality is ensured.
Description
Technical Field
The invention relates to the technical field of automatic assembly and online detection equipment for shaft parts, in particular to automatic signal wheel press-fitting equipment.
Background
The signal wheel is a key component on the combined camshaft and plays an important role in the coordinated operation of all cylinders in the engine. The circumference part of the signal wheel is provided with a plurality of signal teeth and grooves with different sizes, and the whole structure is asymmetric. In order to meet the use function, the installation position of the signal wheel on the camshaft needs to be accurate, and a certain tensioning force needs to be provided between the signal wheel and the camshaft to prevent the signal wheel from sliding. Therefore, the assembly requirement of the signal wheel is high, the traditional manual assembly mode is greatly influenced by assembly experience, and the assembly consistency and the assembly speed are difficult to meet the production requirement of an automatic production line.
Disclosure of Invention
The object of the present invention is to solve at least one of the technical drawbacks mentioned.
Therefore, the invention aims to provide automatic signal wheel press-fitting equipment.
In order to achieve the above object, an embodiment of the present invention provides an automatic press-fitting apparatus for a signal wheel, including: a Z-direction feeding unit and a signal wheel press-mounting and detecting unit, wherein,
the Z-direction feeding unit includes: the device comprises a servo electric cylinder, a pressure sensor, an upper tip, a push block, a support and a first linear guide rail, wherein the support is arranged below the servo electric cylinder and is arranged on the first linear guide rail;
the signal wheel press-fitting and detecting unit comprises: the device comprises a rack, a second linear guide rail, a workbench, a signal wheel positioning block, a Y-direction movement servo motor, a press mounting position support and a test position support, wherein the press mounting position support and the test position support are arranged on the workbench, a signal wheel is placed on the press mounting position support, the signal wheel positioning block extends out, the second linear guide rail is arranged on the rack, the Y-direction movement servo motor drives a ball screw to operate through a coupler, a screw nut is connected with the workbench, the workbench is arranged on the second linear guide rail,
the Z-direction feeding system moves downwards under the driving of the servo electric cylinder, and two ends of the cam shaft are roughly positioned; the push block is pushed out to push an eccentric position on the camshaft, and the camshaft starts to rotate under the action of torque to complete circumferential positioning of the camshaft; the Z-direction feeding system continues to move downwards, two ends of the cam shaft are clamped tightly, in the moving process, the optical axis part at the lower end of the cam shaft is pressed into a central hole of the signal wheel, and the press-mounting position is accurately controlled through servo closed-loop control to complete the press-mounting of the signal wheel;
the Z-direction feeding system moves upwards to a proper position, the cam shaft is taken down, and the signal wheel press-mounting and detecting unit controls the workbench to be switched to a sliding force testing position; placing the camshaft on a lower center of a test station, and enabling the Z-direction feeding system to move downwards to enable the camshaft and the signal wheel to generate a movement trend; detecting the press-fitting force by using a force sensor, and stopping moving when the pressure exceeds a set value; monitoring the displacement and pressure values in the process through a servo system and a force sensor; and judging whether the camshaft is qualified or not according to the displacement and the pressure value, and finishing the press mounting and detection of the camshaft.
Furthermore, the width of the positioning pin on the upper top is smaller than that of the groove at the upper end of the camshaft, after the push block is pushed out, the camshaft starts to rotate, and the rotation stops when the pin is attached to the side face of the groove, so that the circumferential positioning of the camshaft is completed.
Further, a Y-direction movement servo motor is used for driving the workbench to switch the positions of the press mounting position support and the test position support.
Furthermore, a first small-diameter tip is arranged in the middle of an inner hole of the press-fitting position support and comprises a tip head, a guide positioning sleeve, a wave spring and a tip shaft.
Furthermore, the inner hole at the lower end of the camshaft is placed on the tip head of the small-diameter tip, the camshaft is firstly positioned by the upper tip and the lower tip at the two ends in the process of downward pressing movement, and when the lower plane of the camshaft is tightly pressed with the upper plane of the guide sleeve, the signal wheel is pressed in place.
Furthermore, a second small-diameter tip is installed in an inner hole of the test position support, and the second small-diameter tip is formed by directly and fixedly connecting a tip and a tip shaft.
Further, the Z-direction feeding unit drives the cam shaft to move downwards, a relative motion trend can be generated between the signal wheel and the shaft sleeve, the force sensor detects the sliding force of the signal wheel on the cam shaft, the detected sliding force is sent to the PLC, and the PLC judges whether the signal wheel is qualified or not according to preset conditions.
According to the automatic press-fitting equipment for the signal wheel, disclosed by the embodiment of the invention, the eccentric push rod is utilized to axially position the camshaft, and two functions of assembly and detection are realized through the ingenious structure of the small-diameter tip of the press-fitting position and the detection position and through Y-direction position switching. The automatic press mounting and detection device realizes automatic press mounting and detection, and has a fast production beat; manual participation is not needed, the production efficiency is high, and the product consistency is strong; the two functions of assembly and test are realized through simple switching, the integration level of equipment is high, and the cost is reduced; the press-fitting process is detected through the whole process of the force sensor, so that the press-fitting quality is ensured.
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
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a structural view of an automatic press-fitting apparatus for a signal wheel according to an embodiment of the present invention;
FIG. 2 is a block diagram of a longitudinal feed unit according to an embodiment of the present invention;
fig. 3 is a structural view of a signal wheel press-fitting and detecting unit according to an embodiment of the present invention.
Reference numerals:
1-servo electric cylinder;
2-a longitudinal feed unit; 21-a pressure sensor; 22-upper centre; 23-a push block; 24-a support; 25; a first linear guide rail;
a 3-Y direction movement servo motor;
4-a signal wheel press-mounting and detecting unit; 41-a frame; 42-a second linear guide; 43-a workbench; 44-signal wheel locating block; 45 pressing a position support; 46-a test site support;
and 5, a frame.
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.
The embodiment of the invention provides automatic signal wheel press-fitting equipment, which is automatic assembly and online detection equipment for shaft parts, in particular to automatic assembly and assembly quality online detection equipment for a signal wheel on an assembled camshaft of an engine.
As shown in fig. 1 to 3, the automatic press-fitting device for signal wheels according to the embodiment of the present invention includes: the device comprises a Z-direction feeding unit 2, a signal wheel press-fitting and detecting unit 4 and a rack 5, wherein the Z-direction feeding unit 2 and the signal wheel press-fitting and detecting unit 4 are arranged on the rack 5.
As shown in fig. 2, the Z-direction feeding unit 2 includes: servo cylinder 1, pressure sensor 21, upper tip 22, ejector block 23, support 24 and first linear guide 25. Wherein, the support is installed below servo electric cylinder 1, drives the support through servo electric cylinder 1 and carries out the up-and-down motion, and the support is installed on first linear guide 25, utilizes first linear guide 25 to lead and bear partial effort. And a centre support is arranged on the support and is connected with a force sensor, and the force sensor is connected with the upper centre. Therefore, the servo electric cylinder 1 can drive the upper center to move up and down and output the press-fitting force. Utilize force transducer to detect pressure equipment power, send to the PLC controller.
By means of the push block 23 mechanism, one eccentric position on the cam shaft is pushed and the cam shaft rotates around the shaft center for certain angle under the action of moment. And a positioning pin is arranged on the upper center and inserted into a groove at the upper end of the camshaft.
In an embodiment of the invention, the pin of the locating pin is slightly smaller than the width of the groove at the upper end of the camshaft. Therefore, after the push block 23 is pushed out, the camshaft starts to rotate, and when the pin is attached to the side face of the groove, the rotation stops, so that the circumferential positioning of the camshaft is completed, and the positioning consistency of the camshaft at each time is guaranteed.
As shown in fig. 3, the signal wheel press-fitting and detecting unit 4 includes: the test device comprises a rack 41, a second linear guide rail 42, a workbench 43, a signal wheel positioning block 44, a Y-direction movement servo motor 3, a press mounting position support 43 and a test position support 46.
The press-mounting position support 43 and the test position support 46 are mounted on the workbench 43, the signal wheel is placed on the press-mounting position support 43, the signal wheel positioning block 44 extends out, the second linear guide rail 42 is mounted on the rack 41, the Y-direction movement servo motor 3 drives the ball screw to operate through the coupler, the screw nut is connected with the workbench 43, and the workbench 43 is mounted on the second linear guide rail 42. The servo motor drives the ball screw to operate through the coupler, and the screw nut is connected with the workbench 43. The table 43 is mounted on a linear guide. The guide rail is used for guiding the movement direction and bearing gravity, so that the service life of the ball screw is prolonged. A press-fitting position support 43 and a test support are respectively installed on the worktable 43. The workbench 43 is driven by the servo motor to switch positions, two functions of press fitting and testing are achieved, the equipment integration level is high, and the operation efficiency is improved.
And a signal wheel positioning mechanism is arranged near the press mounting position support 43. After the signal wheel is placed on the lower tip, the cylinder drives the positioning block to be inserted into a groove on the signal wheel, and the positioning of the signal wheel is completed.
The middle of the inner hole of the press mounting position support seat 43 is provided with a first small-diameter tip. The first small-diameter center is formed by combining a center head, a guide positioning sleeve, a wave spring and a center shaft. The inner hole at the lower end of the camshaft is placed on the center head, in the process of downward pressing movement, the camshaft is firstly positioned by the large center and the lower center at the two ends, then the small-diameter center is gradually pressed down, when the guide sleeve moves to the blocking shoulder of the press mounting position support 43, the press mounting of the signal wheel is about to be in place, and the downward pressing speed is reduced. The subsequent top pointed end can continuously move downwards for a short distance, and when the lower plane of the camshaft is tightly pressed with the upper plane of the guide sleeve, the signal wheel is pressed in place. The accurate pressing-in position is ensured through the pressure value of the force sensor and the servo position control.
And a second small-diameter tip is arranged in an inner hole of the test position support 46, wherein the second small-diameter tip is formed by directly and fixedly connecting a tip 2 with a tip shaft. The height of the center 2 is slightly smaller than that of the center 1, so that when the lower plane of the signal wheel moves downwards to be attached to the upper plane of the test position support 46, a certain gap is reserved between the center 2 and the shoulder of the test position support 46, and the center cannot move downwards continuously due to blocking. The centre 2 refers to the centre of the test position support, and the centre 1 refers to the centre of the press-mounting position support. The Z-direction servo unit continuously drives the camshaft downwards, a relative movement trend can be generated between the signal wheel and the shaft sleeve, and the sliding force of the signal wheel on the camshaft is detected through the force sensor. The force sensor transmits the detected slip force to the PLC, and the PLC judges whether the slip force is qualified or not according to conditions. Specifically, when the slip force is gradually increased to a limit value, the position of the Z-direction servo is not changed or is changed very little, and the PLC judges that the slip force index is qualified.
The working process of the automatic signal wheel press-fitting equipment comprises the following steps:
the signal wheel is placed in the press-fitting position of the workbench 43, the signal wheel positioning block 44 extends out, and the signal wheel is accurately positioned. The camshaft, to which the signal wheel is not yet mounted, is placed on the lower center. And after the Z-direction feeding system moves downwards to a preset position under the driving of the servo electric cylinder 1, the two ends of the cam shaft are roughly positioned. The preset position refers to the position moving downwards until the upper top point just contacts the upper chamfer of the camshaft. The mandrel push block 23 is pushed out to push an eccentric position on the camshaft, the camshaft starts to rotate under the action of torque, the camshaft is positioned by a dead gear after rotating around the axis for a small distance, the circumferential positioning of the camshaft is completed, and the axial positioning consistency is guaranteed. And the Z-direction feeding system continues to move downwards, the two ends of the cam shaft are clamped tightly, the optical axis part at the lower end of the cam shaft is pressed into the central hole of the signal wheel in the moving process, and the press mounting position is accurately controlled through servo closed-loop control to complete the press mounting of the signal wheel.
The Z-direction feeding system moves upwards to a proper position, the camshaft is taken down, and the signal wheel press-mounting and detecting unit 4 controls the workbench 43 to be switched to a sliding force testing position. The proper position is that the lower end of the upper top point is 5mm higher than the upper end of the camshaft. Placing the camshaft on a lower center of a test station, and enabling the Z-direction feeding system to move downwards to enable the camshaft and the signal wheel to generate a movement trend; detecting the press-fitting force by using a force sensor, and stopping moving when the pressure exceeds a set value; monitoring the displacement and pressure values in the process through a servo system and a force sensor; and judging whether the camshaft is qualified or not according to the displacement and the pressure value, and finishing the press mounting and detection of the camshaft.
According to the automatic press-fitting equipment for the signal wheel, disclosed by the embodiment of the invention, the eccentric push rod is utilized to axially position the camshaft, and two functions of assembly and detection are realized through the ingenious structure of the small-diameter tip of the press-fitting position and the detection position and through Y-direction position switching. The automatic press mounting and detection device realizes automatic press mounting and detection, and has a fast production beat; manual participation is not needed, the production efficiency is high, and the product consistency is strong; the two functions of assembly and test are realized through simple switching, the integration level of equipment is high, and the cost is reduced; the press-fitting process is detected through the whole process of the force sensor, so that the press-fitting quality is ensured.
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 do not necessarily 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.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides an automatic pressure equipment of signal wheel which characterized in that includes: a Z-direction feeding unit and a signal wheel press-mounting and detecting unit, wherein,
the Z-direction feeding unit includes: the device comprises a servo electric cylinder, a pressure sensor, an upper tip, a push block, a support and a first linear guide rail, wherein the support is arranged below the servo electric cylinder and is arranged on the first linear guide rail;
the signal wheel press-fitting and detecting unit comprises: the device comprises a rack, a second linear guide rail, a workbench, a signal wheel positioning block, a Y-direction movement servo motor, a press mounting position support and a test position support, wherein the press mounting position support and the test position support are arranged on the workbench, a signal wheel is placed on the press mounting position support, the signal wheel positioning block extends out, the second linear guide rail is arranged on the rack, the Y-direction movement servo motor drives a ball screw to operate through a coupler, a screw nut is connected with the workbench, the workbench is arranged on the second linear guide rail,
a first small-diameter tip is arranged in the middle of an inner hole of the press-fitting position support and comprises a tip head, a guide positioning sleeve, a wave spring and a tip shaft; an inner hole at the lower end of the camshaft is placed on a tip head of the small-diameter tip, the camshaft is firstly positioned by the large tip and the small tip at two ends in the process of downward pressing movement, and when the lower plane of the camshaft is tightly pressed with the upper plane of the guide sleeve, the signal wheel is pressed in place;
the Z-direction feeding system moves downwards under the driving of the servo electric cylinder, and two ends of the cam shaft are roughly positioned; the push block is pushed out to push an eccentric position on the camshaft, and the camshaft starts to rotate under the action of torque to complete circumferential positioning of the camshaft; the Z-direction feeding system continues to move downwards, two ends of the cam shaft are clamped tightly, in the moving process, the optical axis part at the lower end of the cam shaft is pressed into a central hole of the signal wheel, and the press-mounting position is accurately controlled through servo closed-loop control to complete the press-mounting of the signal wheel;
the Z-direction feeding system moves upwards to a proper position, the cam shaft is taken down, and the signal wheel press-mounting and detecting unit controls the workbench to be switched to a sliding force testing position; placing the camshaft on a lower center of a test station, and enabling the Z-direction feeding system to move downwards to enable the camshaft and the signal wheel to generate a movement trend; detecting the press-fitting force by using a force sensor, and stopping moving when the pressure exceeds a set value; monitoring the displacement and pressure values in the process through a servo system and a force sensor; judging whether the camshaft is qualified or not according to the displacement and the pressure value, and finishing the press mounting and detection of the camshaft;
the Z-direction feeding unit drives the cam shaft to move downwards, a relative motion trend can be generated between the signal wheel and the shaft sleeve, the force sensor detects the sliding force of the signal wheel on the cam shaft, the detected sliding force is sent to the PLC, and the PLC judges whether the cam shaft is qualified or not according to preset conditions.
2. The automatic press-fitting equipment for the signal wheel as claimed in claim 1, wherein the width of the positioning pin on the upper tip is smaller than that of the groove at the upper end of the camshaft, after the push block is pushed out, the camshaft starts to rotate, and when the pin is attached to the side surface of the groove, the rotation is stopped, so that the circumferential positioning of the camshaft is completed.
3. The automatic press-fitting equipment for the signal wheel as claimed in claim 1, wherein the servo motor for Y-direction movement is used for driving the worktable to switch the positions of the press-fitting position support and the test position support.
4. The automatic signal wheel press-fitting equipment as claimed in claim 1, wherein a second small-diameter tip is mounted in an inner hole of the test site support, and the second small-diameter tip is formed by directly and fixedly connecting a tip with a tip shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910975929.9A CN110561341B (en) | 2019-10-15 | 2019-10-15 | Automatic press fitting equipment of signal wheel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910975929.9A CN110561341B (en) | 2019-10-15 | 2019-10-15 | Automatic press fitting equipment of signal wheel |
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| CN110561341A CN110561341A (en) | 2019-12-13 |
| CN110561341B true CN110561341B (en) | 2021-07-27 |
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| CN201910975929.9A Active CN110561341B (en) | 2019-10-15 | 2019-10-15 | Automatic press fitting equipment of signal wheel |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| SU800804A1 (en) * | 1976-01-04 | 1981-01-30 | Научно-Исследовательский И Кон-Структорский Институт Испытатель-Ных Машин, Приборов И Средствизмерения Macc | Machine for testing materials for greep and long-term strength |
| CN202224912U (en) * | 2011-09-05 | 2012-05-23 | 中汽成都配件有限公司 | Detection system for displacement and pressure in press mounting process of signal wheel of camshaft |
| CN203092098U (en) * | 2013-02-28 | 2013-07-31 | 广州市华清工业自动化设备有限公司 | Servo rotor shaft insertion riveting press machine |
| CN105277363B (en) * | 2015-11-30 | 2017-10-17 | 玉环普天单向器有限公司 | A kind of bearing pin of planet wheel spindle is from de- power on-line measuring device and detection method |
| CN205679482U (en) * | 2016-05-25 | 2016-11-09 | 零八一电子集团四川天源机械有限公司 | Camshaft oilhole plug pressure proof performance detection device |
| CN106217032B (en) * | 2016-08-11 | 2018-06-26 | 宁波圣龙浦洛西凸轮轴有限公司 | Camshaft assembly tooling |
| CN206200817U (en) * | 2016-08-11 | 2017-05-31 | 宁波圣龙浦洛西凸轮轴有限公司 | Camshaft pressing clamp |
| CN208196102U (en) * | 2018-03-30 | 2018-12-07 | 上海华迅汽车配件有限公司 | Press-loading device |
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