Device and method for detecting throat diameter and center distance installation position of double-enveloping worm gear reducer

Abstract

The throat diameter and center distance installation position detection device and method of the double-enveloping worm gear reducer include a measuring block for simulating the center position of the worm gear, a clamping spring, a dial indicator and a height gauge. The measuring block is a worm gear finished product processed with the upper limit of the worm gear tooth diameter tolerance, and is cut equally through the worm gear center to obtain a centering measuring block as the actual worm center. A plane that matches the center point of the worm gear is cut on the side opposite to the worm gear tooth surface on the measuring block. A hole is opened on the measuring block, and the center line of the hole intersects the straight line where the plane is located perpendicularly. The clamping spring is connected in the hole and clamps the measuring block on the worm. The detection method of the present invention does not require special detection instruments, which reduces assembly costs. It can be completed in a general mechanical processing factory using ordinary conventional measuring instruments. It does not have excessively high requirements on the technical operation level of the measurement personnel. The measurement work can be completed by one person, avoiding the time-consuming and labor-intensive coloring and grinding adjustment and low assembly accuracy problems of conventional worm gear assembly.

Description

Technical Field

[0001] The invention relates to the technical field of worm gear reducer production, and in particular to a device and method for detecting the throat diameter and center distance installation position of a double-enveloping worm gear reducer. Background Art

[0002] The worm gear is an important component of the reducer. In the double-enveloping worm gear reducer, the worm and the worm wheel are subjected to a large axial force during the meshing transmission process. Ordinary bearings often cannot prevent the axial movement of the worm, which affects the transmission accuracy between the worm and the worm wheel, and thus affects the product quality of the reducer. Therefore, during the installation of the double-enveloping worm gear reducer, it is very important to determine the axial installation position of the worm and the worm wheel, so that the adjustment pads of corresponding thickness can be ground in advance for assembly to improve the rotation accuracy. However, at present, conventional worm wheel assembly requires color painting and grinding, which is time-consuming and labor-intensive to adjust, and the assembly accuracy is still relatively low. Moreover, there is no detection instrument and specific detection method for the assembly position of the double-enveloping worm gear pair after assembly. The general detection process is relatively complicated and requires multiple people to complete the detection content. Summary of the invention

[0003] The present invention is to solve the above problems and provides a method for easily determining the axial installation position dimensions of the worm and the worm wheel during the assembly of the worm gear pair, so as to ensure the accuracy requirements of the meshing position of the double enveloping worm gear pair after assembly.

[0004] The technical solution adopted by the present invention is:

[0005] A double-enveloping worm gear reducer throat diameter and center moment installation position detection device includes a measuring block and a clamping spring for simulating the worm gear center position, the measuring block is a worm gear finished product processed with the upper limit of the worm gear tooth diameter tolerance, and is cut equally through the worm gear center to obtain a centering measuring block as the actual worm center, a plane that coincides with the worm gear center point is cut on the measuring block on the side opposite to the worm gear tooth, a hole is opened on the measuring block, the center line of the hole intersects the straight line where the plane is located at right angles, the clamping spring is inserted into the hole and clamps the measuring block on the worm, and also includes a height gauge and a dial indicator for checking the horizontality of the plane that coincides with the worm gear center point on the measuring block.

[0006] The method for detecting the throat diameter and center distance installation position of the double-enveloping worm gear reducer includes the following steps:

[0007] (I) Measurement of worm throat diameter position: An annular flat washer is set on the work surface, and the worm is fixed vertically on the annular flat washer. The worm throat diameter position measuring device is used to measure the worm throat diameter position, that is, the distance A between the plane on the annular flat washer and the center plane of the worm shaft;

[0008] (ii) Measurement of the position of the worm throat diameter on the worm gear housing: that is, measuring the distance between the worm gear rotation center and the worm throat diameter center. An annular flat washer is set on the workbench. The worm gear is supported and fixed on the workbench by the worm gear support bearing radial positioning frame. The worm gear support bearing radial positioning frame is fixed on the worm gear support bearing radial positioning hole on the worm gear. The center line of the worm gear is parallel to the workbench. An end face frame for one end of the worm gear to abut is set on the workbench perpendicular to the table surface. One side of the end face frame is a vertical plane. The end face frame is vertical. One side of the straight plane is close to a support housing end face frame supporting the reducer housing. The bottom surface of the support housing end face frame is leveled and compacted with the annular flat pad. The distance C between the lowest point of the radial positioning hole of the worm gear support bearing and the upper plane of the annular flat pad, that is, the bottom surface of the support housing end face frame is measured with a height gauge and a dial indicator. The diameter of the radial positioning hole of the worm gear support bearing is D. Then the distance B between the worm gear rotation center and the bottom surface of the support housing end face frame is D / 2-C, which is also the distance B between the worm gear rotation center and the upper plane of the annular flat pad.

[0009] (III) Calculate the installation position of the worm throat diameter on the housing: In step (I), measure the distance A between the center plane of the worm shaft and the upper plane of the annular flat washer. In step (II), obtain the distance B between the rotation center of the worm wheel in the housing and the bottom surface of the support housing end face frame. Then, it can be calculated that the distance between the worm part on the housing and the bottom surface of the support housing end face frame is BA. During the assembly process, use a depth gauge to check and determine, or pre-grind the adjustment washer and install it within the distance between the worm and the bottom surface of the support housing end face frame and compact it.

[0010] The method for measuring the throat diameter position of a worm by using the worm throat diameter position measuring device comprises the following steps: using a clamping spring to pass through a hole on the measuring block to clamp the measuring block on the worm, so that the outer profile tooth portion of the measuring block meshes with the tooth profile of the throat diameter portion of the worm, using a height gauge and a dial indicator to check the horizontality of the plane on the measuring block that fits with the center point of the worm wheel, and when the plane on the measuring block that fits with the center point of the worm wheel is in a horizontal position, the distance A between the plane on the annular flat washer and the center plane of the worm shaft is measured.

[0011] In the method for measuring the throat diameter position of a worm by using the worm throat diameter position measuring device, when using a dial indicator and a height gauge to check whether the plane on the measuring block that fits the center point of the worm wheel is uneven, the measuring block is slightly rotated left or right around the circumference of the worm until the plane on the measuring block that fits the center point of the worm wheel is in a horizontal position.

[0012] The distance C between the lowest point of the radial positioning hole of the worm gear support bearing and the bottom surface of the support box end face frame is measured using a dial indicator and a height gauge. The position of the lowest point of the radial positioning hole of the worm gear support bearing is first measured using a dial indicator, and then the distance C between the lowest point and the bottom surface of the support box end face frame is measured using a height gauge.

[0013] The beneficial effects of the present invention are as follows: the detection method of the present invention does not require special detection instruments, thus reducing assembly costs. The detection can be completed in a general mechanical processing factory using ordinary conventional measuring instruments. There are no excessively high requirements on the technical operation level of the measurement personnel. The measurement work can be completed by one person, thus avoiding the time-consuming and labor-intensive coloring, grinding and adjustment required for conventional worm gear assembly, as well as the low assembly precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the measurement block structure of the present invention.

[0015] Figure 2 It is a schematic diagram of measuring the throat diameter position of the worm according to the present invention.

[0016] Figure 3 It is a schematic diagram of measuring the throat diameter position of the worm on the worm gear housing of the present invention.

[0017] Among them: 1-measuring block; 2-plane that fits the center point of the worm wheel; 3-hole; 4-clamping spring; 5-worm; 6-dial indicator; 7-annular flat washer; 8-working table; 9-end face frame; 10-support box end face frame; 11-worm wheel support bearing radial positioning hole; 12-worm wheel. DETAILED DESCRIPTION

[0018] A double-enveloping worm gear reducer throat diameter and center moment installation position detection device comprises a measuring block 1 and a clamping spring 4 for simulating the worm gear center position, wherein the measuring block 1 is a worm gear finished product processed with the upper limit of the worm gear tooth diameter tolerance and cut equally through the worm gear center to obtain a centering measuring block as the actual worm center, a plane 2 that fits the worm gear center point is cut on the measuring block 1 on the side opposite to the worm gear tooth surface, a hole 3 is opened on the measuring block 1, and the center line of the hole 3 intersects perpendicularly with the straight line where the plane 2 that fits the worm gear center point is located, the clamping spring 4 is connected in the hole 3 and clamps the measuring block 1 on the worm 5, and also comprises a dial indicator 6 and a height gauge for checking the horizontality of the plane 2 that fits the worm gear center point on the measuring block 1.

[0019] The present invention will be described in detail below with reference to specific embodiments.

[0020] The double-enveloping worm gear reducer throat diameter and center moment installation position detection device includes a measuring block 1 for simulating the center position of the worm gear, a clamping spring 4, a dial indicator 6 and a height gauge. The measuring block 1 is a worm gear finished product processed according to the upper limit of the worm gear tooth diameter tolerance, which is cut evenly through the worm gear center as the centering measuring block for the actual worm center. The lightweight surface hardness high aluminum alloy material is used. The worm gear finished product is first processed according to the upper limit of the worm gear tooth diameter tolerance, and then the high-precision line equipment is used to cut evenly through the worm gear center to find the center. Measuring block 1, a plane 2 that is in contact with the center point of the worm wheel is cut on the side of the measuring block 1 opposite to the worm wheel tooth surface, a hole 3 is opened on the measuring block 1, the center line of the hole 3 intersects the straight line where the plane 2 is located perpendicularly, the clamping spring 4 is connected in the hole 3 and clamps the measuring block 1 on the worm 5, the height gauge and the dial indicator 6 check the horizontality of the plane 2 on the measuring block 1 that is in contact with the center point of the worm wheel, when the plane on the measuring block 1 that is in contact with the center point of the worm wheel is leveled, the position of the plane is the center plane position of the throat diameter of the worm 5.

[0021] The method for detecting the throat diameter and center distance installation position of the double-enveloping worm gear reducer includes the following steps:

[0022] (I) Measurement of worm throat diameter position: an annular flat washer 7 is set on the work table 8, and the worm 5 is vertically fixed on the annular flat washer 7. The throat diameter position of the worm 5 is measured by a worm throat diameter position measuring device. The measuring block 1 is clamped on the worm 5 by a clamping spring 4 passing through the hole 3 on the measuring block 1, so that the outer profile tooth portion of the measuring block 1 meshes with the tooth profile of the throat diameter portion of the worm 5. The horizontality of the plane 2 on the measuring block 1 that is in contact with the center point of the worm wheel is checked with a height gauge and a dial indicator 6. When the plane 2 on the measuring block 1 that is in contact with the center point of the worm wheel is in a horizontal position, the distance A between the plane on the annular flat washer 7 and the center plane of the worm 5 axis is measured. When the dial indicator 6 and the height gauge are used to check that the plane 2 on the measuring block 1 that is in contact with the center point of the worm wheel is uneven, the measuring block 2 is slightly rotated left or right around the circumference of the worm 5 until the plane 2 on the measuring block 1 that is in contact with the center point of the worm wheel is in a horizontal position.

[0023] (ii) Measurement of the throat diameter position of the worm on the worm gear housing: that is, measuring the distance between the rotation center of the worm wheel 12 and the throat diameter center of the worm 5. An annular flat washer 7 is arranged on the work surface 8. The worm wheel 12 is supported and fixed on the work surface 8 by a radial positioning frame of a worm wheel support bearing. The radial positioning frame of the worm wheel support bearing is fixed at the radial positioning hole 11 of the worm wheel support bearing on the worm wheel 12. The center line of the worm wheel 12 is parallel to the work surface 8. An end face frame 9 for one end of the worm wheel 12 to abut is arranged on the work surface 8 perpendicular to the table surface. One side of the end face frame 9 is a vertical plane. One side of the vertical plane of the end face frame 9 is closely attached to a support housing end face frame 10 supporting the reducer housing. The bottom surface of the support housing end face frame 10 is leveled and compacted with the annular flat washer 7. Use a height gauge to measure the height of the reducer housing. The distance C between the lowest point of the radial positioning hole 11 of the worm gear support bearing and the upper plane of the annular flat washer 7, that is, the bottom surface 10 of the support box end face frame is measured with the dial indicator 6 and the height gauge. The position of the lowest point of the radial positioning hole 11 of the worm gear support bearing is first measured with the dial indicator 6, and then the distance C between the lowest point of the radial positioning hole 11 of the worm gear support bearing and the bottom surface of the support box end face frame 10 is measured with the height gauge. The diameter of the radial positioning hole 11 of the worm gear support bearing is D, and the distance B between the rotation center of the worm gear 12 and the bottom surface of the support box end face frame 10 is D / 2-C, which is also the distance B between the rotation center of the worm gear 12 and the upper plane of the annular flat washer 7;

[0024] (III) Calculate the installation position of the worm throat diameter on the housing: In step (I), the distance A between the center plane of the worm 5 axis and the plane on the annular flat washer 7 is measured, and in step (II), the distance B between the rotation center of the worm wheel 12 in the housing and the bottom surface of the support housing end face frame 10 is obtained. Then, it can be calculated that the distance BA between the part of the worm 5 on the housing and the bottom surface of the support housing end face frame 10 can be determined by using a depth gauge during the assembly process, or the adjustment washer that has been grinded in advance can be assembled within the distance between the worm 5 and the bottom surface of the support housing end face frame 10 and compacted.

[0025] The measurement of the worm gear meshing center position is similar to the above method. It is also necessary to measure in advance the distance from the center of the worm gear 12 tooth throat diameter to the end face of the bearing, and the distance from the center of the worm hole on the housing to the end face of the bearing installed on the housing. The difference between the two distances is the size of the adjustment pad that should be configured for this part. After pre-matching and grinding, the installation can be simple and accurate. The distance from the center of the worm gear 12 tooth throat diameter to the end face of the bearing is measured using a double-enveloping worm gear reducer worm throat diameter position measuring device.

[0026] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A method for detecting the throat diameter and center distance installation position of a double-envelope worm gear reducer, using a device for detecting the throat diameter and center distance installation position of a double-envelope worm gear reducer, characterized in that: The detection device comprises a measuring block (1) for simulating the center position of a worm gear and a clamping spring (4), wherein the measuring block (1) is a centering measuring block for simulating the center position of a worm gear, which is obtained by evenly cutting a worm gear finished product processed with an upper limit of the tolerance of the worm gear tooth portion through the center of the worm gear to serve as the center of the actual worm, and a plane (2) that is in contact with the center point of the worm gear is cut on the measuring block (1) on the side opposite to the worm gear tooth portion, and a hole (3) is opened on the measuring block (1), and the center line of the hole (3) and the straight line on which the plane (2) that is in contact with the center point of the worm gear is located intersect vertically, and the clamping spring (4) is connected to the hole (3) and clamps the measuring block (1) on the worm gear (5), and also comprises a dial indicator (6) and a height gauge for checking the horizontality of the plane (2) that is in contact with the center point of the worm gear on the measuring block (1); The detection steps are: (i) Measurement of the throat diameter position of the worm: an annular flat washer (7) is provided on the work surface (8), the worm (5) is vertically fixed on the annular flat washer (7), and the throat diameter position of the worm (5) is measured using a worm throat diameter position measuring device, i.e., the distance A between the upper plane of the annular flat washer (7) and the center plane of the worm (5) axis; (ii) Measurement of the position of the throat diameter of the worm on the worm gear housing: that is, measuring the distance between the rotation center of the worm wheel (12) and the throat diameter center of the worm (5). An annular flat washer (7) is provided on the work surface (8). The worm wheel (12) is supported and fixed on the work surface (8) by a worm wheel support bearing radial positioning frame. The worm wheel support bearing radial positioning frame is fixed to the worm wheel support bearing radial positioning hole (11) on the worm wheel (12). The center line of the worm wheel (12) is parallel to the work surface (8). An end face frame (9) is provided on the work surface (8) perpendicular to the work surface for one end of the worm wheel (12) to abut against. One side of the end face frame (9) is a vertical plane. (9) A support housing end face frame (10) supporting the reducer housing is provided on one side of the vertical plane, the bottom surface of the support housing end face frame (10) is flush with and compacted against the annular flat washer (7), and the distance C between the lowest point of the radial positioning hole (11) of the worm gear support bearing and the upper plane of the annular flat washer (7), i.e., the bottom surface of the support housing end face frame (10) is measured using a height gauge and a dial indicator (6). The diameter of the radial positioning hole (11) of the worm gear support bearing is D, and the distance B between the rotation center of the worm gear (12) and the bottom surface of the support housing end face frame (10) is D / 2-C, which is also the distance B between the rotation center of the worm gear (12) and the upper plane of the annular flat washer (7); (iii) Calculating the installation position of the worm throat diameter position on the housing: The distance A between the axial center plane of the worm (5) and the upper plane of the annular flat washer (7) is measured in step (i), and the distance B between the rotation center of the worm wheel (12) in the housing and the bottom surface of the support housing end face frame (10) is obtained in step (ii). Then, it can be calculated that the distance BA between the worm (5) part on the housing and the bottom surface of the support housing end face frame (10) is obtained. The distance can be determined by using a depth gauge during assembly or by pre-grinding an adjusting washer and assembling it within the distance between the worm (5) and the bottom surface of the support housing end face frame (10) and compacting it.

2. The method for detecting the throat diameter and center distance installation position of a double-enveloping worm gear reducer according to claim 1, characterized in that: The method for measuring the throat diameter position of a worm by using a worm throat diameter position measuring device comprises the following steps: using a clamping spring (4) to pass through a hole (3) on a measuring block (1) to clamp the measuring block (1) on the worm (5) so that the outer profile tooth portion of the measuring block (1) meshes with the tooth profile of the throat diameter portion of the worm (5); using a height gauge and a dial indicator (6) to check the horizontality of a plane (2) on the measuring block (1) that is in contact with the center point of the worm wheel; when the plane (2) on the measuring block (1) that is in contact with the center point of the worm wheel is in a horizontal position, the distance A between the plane on the annular flat washer (7) and the center plane of the worm (5) shaft is measured.

3. The method for detecting the throat diameter and center distance installation position of a double-enveloping worm gear reducer according to claim 1, characterized in that: In the method for measuring the throat diameter position of a worm using the worm throat diameter position measuring device, when a dial indicator (6) and a height gauge are used to check whether the plane (2) on the measuring block (1) that contacts the center point of the worm wheel is uneven, the measuring block (1) is slightly rotated leftward or rightward around the circumference of the worm (5) until the plane (2) on the measuring block (1) that contacts the center point of the worm wheel is in a horizontal position.

4. The method for detecting the throat diameter and center distance installation position of a double-enveloping worm gear reducer according to claim 1, characterized in that: The distance C between the lowest point of the radial positioning hole (11) of the worm gear support bearing and the bottom surface of the support box end face frame (10) is measured by a dial indicator (6) and a height gauge. The position of the lowest point of the radial positioning hole (11) of the worm gear support bearing is first measured by the dial indicator (6), and then the distance C between the lowest point of the radial positioning hole (11) of the worm gear support bearing and the bottom surface of the support box end face frame (10) is measured by the height gauge.

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