CN202204481U - Gear chamfering laser gauge - Google Patents

Abstract

The utility model provides a gear chamfering laser measuring instrument, which includes a tooth profile positioning component, a rotating working platform, a profile measuring device, a data acquisition and processing device; the gear is placed on the rotating working platform, the tooth profile positioning component fixes the gear, and the profile is measured. The device detects the position and size of the gear chamfer, and transmits the data to the data acquisition and processing device through the data line. The beneficial effects of the utility model are: the overall structure is simple, the manufacturing cost is low, and the non-contact measurement method is adopted, which has the advantages of visualization, intelligence, high sampling rate, high precision, and non-destructive measurement; it can realize one-time chamfering of gears. Multi-section measurement, and the positioning of each section and the starting point of measurement is accurate, eliminating the influence of human factors on the measurement results; the degree of intelligence and automation is high.

Description

Gear chamfering laser measuring instrument

technical field

The utility model belongs to the technical field of measuring devices for chamfering contour dimensions of internal and external gears, in particular to a laser measuring instrument for chamfering of gears.

Background technique

The chamfering gear is one of the necessary parts in the transmission of automobiles, tractors, motorcycles, etc., and is the basic component to realize shift guidance and motion transmission. The performance of automobile gearbox has always been an important index to evaluate the performance of automobiles. The smoothness of gear connection and the smoothness of motion transmission during the shifting process of automobiles are directly related to the quality of chamfered gears. Therefore, chamfering gears play an important role in the automobile manufacturing industry.

At present, the internal and external tooth end face chamfer profile dimensions and shape and position tolerances of various gear parts are mainly measured by a profile measuring instrument. Among them, there are the OPTACM-VC/VL series roughness profile measuring instrument produced by OPTACM Company of Germany, and the 2310A surface shape measuring instrument produced by Harbin Measuring Tools Group Co., Ltd. in China. The measuring principle and mechanism design of the profile measuring instrument are similar. The measurement principle is: the probe of the sensor is in contact with the measured surface of the workpiece, and the driver drives the sensor to move along the measurement direction at a constant speed, so that the probe slides on the surface of the workpiece at a constant speed. While the driver advances for a sampling interval, the sensor records the lower surface. The vertical coordinates of the contour points are converted into electrical signals and sent to the computer. Since the measurement method of this type of profile measuring instrument is contact measurement, the sensor probe must be in contact with the measured surface during the measurement process. Due to the high hardness of the sensor probe, it is not suitable for measuring soft workpieces; when evaluating the quality of gear chamfering Generally, it is necessary to measure multiple sections of each chamfer. The above-mentioned profile measuring instrument can only measure a single section. If multiple sections are to be measured, the workpiece must be re-installed after the measurement of one section is completed before the next step can be performed. For cross-section measurement, in the process of reloading the workpiece, the measurement accuracy will inevitably be reduced due to the influence of human factors; at the same time, the stability of the measured value will also be affected during the repeated measurement process; it is difficult for the probe to be obtained during the measurement of the profile measuring instrument data at the edge of the contour, thereby compromising the integrity of the contour data. Due to the above-mentioned problems of traditional profile measuring instruments in the detection of gear chamfering, chamfering gear manufacturers have an urgent need for special gear chamfering profile measuring instruments.

Utility model content

The purpose of the utility model is to overcome the shortcomings of the prior art above, and to provide a gear chamfering laser measuring instrument which realizes the automatic measurement of the gear chamfering profile by non-contact measurement.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

A gear chamfering laser measuring instrument, including a tooth profile positioning component, a rotating working platform, a profile measuring device, and a data acquisition and processing device; the gear is placed on the rotating working platform, the tooth profile positioning component fixes the gear, and the profile measuring device detects the gear chamfering The position and size of the corner, and transmit the data to the data acquisition and processing device through the data line.

The profile measurement device includes a cross arm, a column, a laser displacement sensor, an X-Y precision mobile platform and a drive controller; the laser displacement sensor is connected to the cross arm, the cross arm is adjustable to the column, the column is fixed to the X-Y precision mobile platform, and the laser displacement sensor The X-Y precision mobile platform is connected with the drive controller through the control cable, and the drive controller is connected with the data acquisition and processing device through the data line.

The rotary working platform includes a positioning plane and a positioning mandrel. The center of the positioning plane is provided with a Morse taper hole, which is matched with the Morse taper handle of the positioning mandrel. The shaft rod of the positioning mandrel sleeves the gear on the positioning plane.

The tooth profile positioning component is a mechanism to realize the positioning of the measured gear, including a screw, a lifting guide bush, a height adjustment nut, a positioning rod and a horizontal guide bush. The screw and the height adjusting nut can be lifted and socketed, and the short cantilever of the lifting guide sleeve is fixedly connected with the horizontal guide sleeve; the front end of the horizontal guide sleeve is provided with a guide pin, the front end of the positioning rod is provided with a pair of tooth chucks, and the rear end of the positioning rod is provided with There is a handle; a spring is arranged between the horizontal guide sleeve and the positioning rod. The positioning rod can slide freely along its own axial direction, and its rotation in the circumferential direction is restricted by the guide pin, and the tooth loading is automatically completed by the elastic force of the spring. According to the size of the gear modulus, select the appropriate pairing chuck, and fix it on the front end of the positioning rod; adjust the height of the pairing chuck by adjusting the lifting nut, determine the relative position between the gear under test and the pairing chuck, and lock it Lock and position the tightening device; pull the positioning rod and the tooth chuck outward through the handle; rotate the gear to be tested by one tooth or several teeth, release the handle, and under the action of the compression spring (located inside the horizontal guide sleeve), The positioning rod and the tooth chuck move forward to guide the positioning of the measured gear so that the measuring plane is perpendicular to the center line of the measured gear, that is, perpendicular to the X-axis of the X-Y precision mobile platform.

Further, the tooth-tooth chuck of the tooth profile positioning assembly is an external clamping type.

Further, both the rotating working platform and the tooth profile positioning assembly are provided with a base with an open slot, and the base of the rotating working platform and the base of the tooth profile positioning assembly are connected to the T-slot of the worktable through the bolts placed in the opening slot. fixed connection between.

Further, the data collection and processing device is also connected with the printout device.

The gear chamfering laser measuring instrument automatically searches the center of the measured gear, which is automatically realized by the measurement software.

The X-Y precision mobile platform is controlled by a drive controller, and its drive mode adopts a two-dimensional motion mode. The data acquisition card is placed in the slot of the computer box, and the data collected by the laser displacement sensor is stored, analyzed and processed by the computer. A set of software realizes Synchronous control, data acquisition and data processing, etc., the computer performs data processing in real time and displays the measurement results.

The advantages and positive effects that the utility model has are:

1. The overall structure of the utility model is simple, the manufacturing cost is low, and a non-contact measurement method is adopted, which has the advantages of visualization, intelligence, high sampling rate, high precision, and non-destructive measurement;

2. The utility model adopts the tooth profile positioning component to realize the accurate positioning of the measured gear. The measured value of the laser displacement sensor can be directly used as the Z-direction coordinate value of each measuring point on the scanned section, avoiding system calibration errors and significantly improving the measurement accuracy. precision;

3. The utility model can automatically search the center of the gear to be tested, and realize the multi-section continuous measurement of the gear chamfering profile based on the center; the driving method adopts the two-dimensional movement method instead of the traditional one-dimensional movement method, which can realize the gear chamfering One-time multi-section measurement, and the positioning of each section and the measurement starting point is accurate, eliminating the influence of human factors on the measurement results;

4. The utility model has a high degree of intelligence and automation. A computer can be used to simultaneously realize synchronous control, data acquisition and data processing; the use of high-precision laser displacement sensors to collect data effectively improves the detection accuracy of the instrument.

Description of drawings

Fig. 1 is a schematic diagram of the system connection of the gear chamfering laser measuring instrument of the present invention;

Fig. 2 is the schematic diagram of the rotary working platform of the present utility model;

Fig. 3 is a schematic diagram of a positioning mandrel of the present invention;

Fig. 4 is a schematic diagram of the tooth profile positioning assembly of the present invention;

Fig. 5 is a schematic diagram of the pairing chuck of the present invention.

Detailed ways

As shown in Figure 1, a gear chamfering laser measuring instrument includes a tooth profile positioning assembly 1, a rotating work platform 2, a profile measuring device 3, and a data acquisition and processing device 4; the gear is placed on the rotating work platform 2, and the tooth profile The positioning component 1 fixes the gear, and the profile measurement device 3 detects the position and size of the chamfer of the gear, and transmits the data to the data acquisition and processing device 4 through the data line 5 .

The profile measuring device 3 includes a cross arm 6, a column 7, a laser displacement sensor 8, an X-Y precision mobile platform 9 and a drive controller 10; the laser displacement sensor 8 is connected to the cross arm 6, the cross arm 6 is adjustable to the column 7, and the column 7 It is fixedly connected with the X-Y precision mobile platform 9, the laser displacement sensor is connected with the data acquisition and processing device 4 through the data line 5, the X-Y precision mobile platform 9 is connected with the drive controller 10 through the control cable 11, and the drive controller 10 is connected with the data through the data line. The collection and processing device 4 is connected.

As shown in FIGS. 2 and 3 , the rotary working platform 2 includes a positioning plane 13 and a positioning mandrel 14 . The center of the positioning plane 13 is provided with a Morse taper hole 15 , which cooperates with the Morse taper shank 16 of the positioning mandrel 14 . The shaft rod of the positioning mandrel 14 is socketed and positioned with the shaft hole of the gear.

As shown in Figures 4 and 5, the tooth profile positioning assembly 1 is a mechanism to realize the positioning of the measured gear, including a screw 17, a lifting guide sleeve 18, a positioning rod 19 and a height adjustment nut 28, and the lifting guide sleeve 18 cooperates with the screw 17 Socketing, the short cantilever of the lifting guide sleeve 18 is fixedly connected with the positioning rod guide sleeve 22, the front end of the guide sleeve 22 is provided with a guide pin 23, the front end of the positioning rod 19 is provided with a pair of tooth chucks 20, and the rear end is provided with a handle 21. A spring is arranged in the sleeve 22 to provide thrust for the positioning rod 19 .

The positioning rod 19 can slide freely along its own axial direction, and its rotation in the circumferential direction is restricted by the guide pin 23, and the tooth loading is automatically completed by the elastic force of the spring. According to the size of the gear modulus, select the appropriate pairing chuck 20, and fix it on the front end of the positioning rod 19; drive the lifting guide sleeve 18 to rise and fall together through the height adjustment nut 28, adjust the height of the pairing chuck 20, and determine the gear to be tested. Tighten the locking handle 29 of the lifting guide sleeve 18 for the relative position between the tooth chucks 20; pull the positioning rod 19 and the tooth chuck 20 outward through the handle 21; rotate the gear to be tested by one tooth or several teeth , loosen the handle 21, under the action of the inner spring of the guide sleeve 22, the positioning rod 19 and the tooth chuck 20 move forward to guide the automatic positioning of the gear under test, so that the measurement section is perpendicular to the center line of the gear under test, that is, The X-axis of the X-Y precision mobile platform 9 is vertical.

Both the rotary working platform 2 and the tooth profile positioning assembly 1 are provided with a base with a slot with an opening. The base 24 of the rotary working platform 2 and the base 25 of the tooth profile positioning assembly 1 are connected to the T of the workbench through the bolts in the slot. Fixed connection between grooves.

The data acquisition and processing device 4 is composed of a computer and software, and is also connected with a printout device 27 .

The gear chamfering laser measuring instrument automatically searches the center of the measured gear, which is automatically realized by the measurement software.

The X-Y precision mobile platform 9 is controlled by a drive controller, and its drive mode adopts a two-dimensional motion mode; the data acquisition card is placed in the PCI slot of the computer motherboard, and the data collected by the laser displacement sensor 8 is stored, analyzed and processed by the computer. The software realizes synchronous control, data acquisition and data processing, etc., and the computer performs data processing in real time and displays the measurement results.

The working process of the present utility model is:

① Automatically search and locate the center of the mandrel (that is, the gear under test);

②The gear to be tested is positioned by the positioning mandrel 14 and the tooth profile positioning assembly 1;

③Input the position and measurement stroke of each measurement section, the software automatically calculates and gives the multi-section measurement path planning;

④The X-Y precision mobile platform 9 moves to position the laser displacement sensor 8 to the corresponding section of the measured gear chamfer;

⑤ laser displacement sensor 8 carries out contour measurement to gear chamfering along Y direction, and records the measurement data at the same time;

⑥The laser displacement sensor 8 moves to the next specified section along the X direction, measures the chamfer profile again, and records the data, repeats this action n times (the number of times required to obtain the gear profile), and records the data in sequence;

⑦Transmit the data to the computer for processing to obtain the profile of the gear chamfer, and complete the precise measurement of the profile of the gear chamfer.

The main parameters that can be measured by the gear chamfering laser measuring instrument of the utility model include: the angle of the forming section and its symmetry, the distance from the intersection line of the forming surface to the designated surface, the curvature radius of the arc chamfering, etc.; Positioning and gear center automatic search, multi-section two-dimensional profile continuous measurement function, can evaluate gear chamfering parameters (such as height, width, radius, center distance, angle, etc.). The measurement accuracy of the laser displacement sensor can reach 0.1 μm, which meets the accuracy requirements of gear chamfer profile measurement.

An embodiment of the present utility model has been described in detail above, but the content described is only a preferred embodiment of the present utility model, and cannot be considered as limiting the implementation scope of the present utility model. All equal changes and improvements made according to the application scope of the utility model should still belong to the scope covered by the patent of the utility model.

Claims (7)

1. a gear chamfering laser measuring apparatus is characterized in that: comprise flank profil positioning component (1), rotary working platform (2), contour outline measuring set (3), data acquisition and processing (DAP) device (4); Tested gear places on the rotary working platform (2), and flank profil positioning component (1) is fixed gear, and contour outline measuring set (3) arrives data acquisition and processing (DAP) device (4) through data line (5) with data transmission.

2. a kind of gear chamfering laser measuring apparatus according to claim 1 is characterized in that: contour outline measuring set (3) comprises transverse arm (6), column (7), laser displacement sensor (8), X-Y precise mobile platform (9) and driving governor (10); Laser displacement sensor (8) is connected with transverse arm (6); Transverse arm (6) is connected with column (7) scalable; Column (7) is fixedly connected with X-Y precise mobile platform (9); Laser displacement sensor (8) is connected with data acquisition and processing (DAP) device (4) through data line (5), and X-Y precise mobile platform (9) is connected with driving governor (10) through umbilical cable (11), and driving governor (10) is connected with data acquisition and processing (DAP) device (4) through data line.

3. a kind of gear chamfering laser measuring apparatus according to claim 1 is characterized in that: the flank profil positioning component comprises leading screw (17), up-down guide pin bushing (18), backstay (19) and height setting nut (28); Up-down guide pin bushing (18) cooperates socket with leading screw (17); The short cantilever of up-down guide pin bushing (18) is fixedly connected with horizontal guide pin bushing (22); The front end of horizontal guide pin bushing (22) is provided with guide pin (23); Backstay (19) front end is provided with toothholder head (20), and the rear end is provided with handle (21), is provided with spring between horizontal guide pin bushing (22) and the backstay (19).

4. a kind of gear chamfering laser measuring apparatus according to claim 3 is characterized in that: described is external clamping to toothholder head (20).

5. a kind of gear chamfering laser measuring apparatus according to claim 1; It is characterized in that: rotary working platform (2) comprises plane of orientation (13) and positioning core axle (14); The workbench center is provided with mohs tapered bore (15), matches with the Morse taper shank (16) of positioning core axle (14).

6. according to any described a kind of gear chamfering laser measuring apparatus of claim 1～5; It is characterized in that: rotary working platform (2) and flank profil positioning component (1) all are provided with the base of band opening elongated slot, are fixedly connected between the base (24) of rotary working platform (2) and the base (25) of the flank profil positioning component T type groove through the interior bolt of opening elongated slot and worktable (26).

7. a kind of gear chamfering laser measuring apparatus according to claim 1 is characterized in that: data acquisition and processing (DAP) device (4) also links to each other with print out equipment (27).

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