CN219141804U - Gear tooth surface deflection angle detection device for notch spline and gear on steering gear - Google Patents

Abstract

The utility model relates to a device for detecting the tooth surface deflection angle of a notch spline and a gear on a steering gear, which is used for detecting the tooth surface deflection angle of a notch spline structure and a gear structure on the steering gear, and comprises the following components: the device comprises a base, a supporting plate, a rotating seat, an angle sensor, an upper end fixing mechanism arranged on the supporting plate, a lower end fixing mechanism arranged on the rotating seat, a spline fixing mechanism and a gear fixing mechanism. Compared with the prior art, the utility model has the advantages of quick measurement, reduced measurement waiting time, improved measurement efficiency and higher detection precision.

Description

Gear tooth surface deflection angle detection device for notch spline and gear on steering gear

Technical Field

The utility model belongs to the technical field of steering gears, and relates to a device for detecting a gap spline and a gear tooth surface deflection angle on a steering gear.

Background

As a representative of the civilization of the human industry, automobiles have affected the rapid development of economies; nowadays, automobiles become a daily indispensable transportation tool, and simultaneously greatly widen the living boundaries of people; automobile steering gear types are now broadly divided into four major categories: worm pin type steering gear, worm roller type steering gear, recirculating ball type steering gear, and rack and pinion type steering gear. The gear rack type steering gear which is the most widely applied in the field of passenger cars at present has the advantages of simple and compact structure, high strength and low cost.

The steering gear is the most important key component in an automobile steering system, and key parts in the steering gear take a gear and a rack as cores. The steering gear structure is shown in fig. 1-4, and comprises a gear body 1, a notch spline structure 2 arranged at one end of the gear body 1, and a gear structure 3 arranged at the other end of the gear body 1. In the notch spline structure 2, a pair of special-shaped teeth with relatively wide tooth grooves are arranged on opposite sides of the notch in parallel. Because the gear and the rack are in hard contact when being meshed, the strength, the toughness and the durability of the rack are all very high; meanwhile, people pay more and more attention to comfort, reliability, steering feel, silence and the like of the vehicle in daily use; the traditional rack is cylindrical structure, because of the processing characteristic of rack itself when the back of tooth is rubbed with the slider contact, the back of tooth hardness after quenching is higher, and the roughness of back of tooth after polishing hardly reduces, therefore the friction noise is bigger when the rack is horizontal migration about, simultaneously because the intensity problem of cushion gear can not too closely lead to the fact the meshing clearance big with the meshing of rack, and the meshing contact noise is big when horizontal migration about the rack, turns to the feel unbalance, and is not enough linear.

Disclosure of Invention

The utility model aims to provide a device for detecting the deflection angle of a notch spline and a gear tooth surface on a steering gear, which is quick in measurement, visual in numerical reflection and simple in operation.

The aim of the utility model can be achieved by the following technical scheme:

a tooth surface deflection angle detection device of a notch spline and a gear on a steering gear is used for detecting tooth surface deflection angles of a notch spline structure and a gear structure on the steering gear, and comprises:

the device comprises a base, a supporting plate fixedly arranged on the base, a rotating seat rotatably arranged on the base and an angle sensor connected with the rotating seat;

the upper end fixing mechanism is arranged on the supporting plate, and the lower end fixing mechanism is arranged on the rotating seat and is used for vertically fixing two ends of the steering gear and enabling the steering gear to rotate freely;

the spline fixing mechanism is arranged on the support plate and comprises a double-point locating pin used for being embedded into the locating notch spline structure and a double-point locating pin driving piece for driving the double-point locating pin to be embedded into or far away from the notch spline structure; and

the gear fixing mechanism is arranged on the rotating seat and comprises a single-point locating pin used for being embedded into the locating gear structure and a single-point locating pin driving piece used for driving the single-point locating pin to be embedded into or far away from the gear structure.

Further, the upper end fixing mechanism comprises a clamping handle, an elastic clamping device and an upper center which are sequentially connected;

the lower end fixing mechanism comprises a lower center arranged on the rotating seat;

the two ends of the steering gear are respectively provided with a slot, and the upper center and the lower center are respectively embedded into the corresponding slots and clamp and fix the steering gear.

Further, the clamping handle is an upward pulling handle, and the elastic clamping device comprises a clamping shell, a clamping transmission rod, a limiting plate and a clamping spring, wherein the clamping transmission rod is arranged in the clamping shell in an upward and downward moving mode, the limiting plate is arranged on the side wall of the bottom end of the clamping transmission rod, and the clamping spring is arranged between the top of the clamping shell and the limiting plate;

the top end of the clamping transmission rod passes through the top of the clamping shell and is connected with the upper pull handle, and the top end of the upper center passes through the bottom of the clamping shell and is connected with the bottom end of the clamping transmission rod.

Further, the supporting plate is provided with a guide rail and a fixing groove which extend along the height direction; the upper end fixing mechanism comprises an upper end sliding seat which is arranged on the guide rail in a sliding way; the upper end sliding seat is provided with a sliding seat fixing clamp embedded in the fixing groove.

Further, the slide mounting fixture include locate the anchor clamps logical groove that upper end sliding seat side and be linked together with the fixed slot, threaded connection in anchor clamps logical inslot and the bottom extend to the slide bolt of fixed slot bottom, locate the rotation handle on slide bolt top to and locate slide bolt bottom and with fixed slot friction contact's slide fixing slipmat.

Further, the spline fixing mechanism also comprises a spline fixing seat and a spline fixing clamp which is arranged on the spline fixing seat and is embedded in the fixing groove.

Further, spline mounting fixture include spline anchor clamps fixing base, set up on the spline anchor clamps fixing base and the screw hole that is linked together with the fixed slot, threaded connection in the screw hole and the bottom extend to the fixed bolt of fixed slot bottom to and locate the fixed bolt bottom and with fixed slot friction contact's spline fixed slipmat.

Further, the double-point locating pin comprises a pin head and a spline locating end which is arranged at the top of the pin head and extends obliquely outwards.

Further, the single-point locating pin driving piece and the double-point locating pin driving piece are translation push rods.

Further, the device also comprises a display electrically connected with the angle sensor.

Compared with the prior art, the utility model has the following characteristics:

1) Firstly, vertically clamping and fixing a steering gear standard part by using an upper end fixing mechanism and a lower end fixing mechanism, and then, embedding a double-point locating pin into a pair of special-shaped teeth with relatively wide tooth grooves by rotating the standard part and operating a double-point locating pin driving part and a single-point locating pin driving part, and embedding a single-point locating pin into a single tooth groove of a gear structure, thereby completing calibration; then, replacing a standard sample by adopting a sample to be detected, basically positioning a single-point positioning pin and a gear structure according to the position of the special-shaped tooth, accurately embedding a double-point positioning pin into the special-shaped tooth to finish accurate positioning, and determining the offset angle of a notch spline and a gear tooth surface according to the rotation angle during accurate positioning; therefore, compared with a gear precise measuring instrument, the gear precise measuring instrument can be operated on duty only after professional long-time theoretical and practical training, and the measuring device has the advantages of simplicity and rapidness in operation, an operator can use the measuring device after simple training, and single detection beat can be realized in 10'/parts;

2) The utility model has high detection precision, and the resolution of the detection tool can reach 0.1';

3) The utility model can quickly measure, reduce the waiting time of measurement, improve the measuring efficiency, and the measuring result of each workpiece can be intuitively reflected by the angle display instrument without a series of complex conversion.

Drawings

FIG. 1 is a schematic view of a steering gear;

FIG. 2 is a section A-A of FIG. 1;

FIG. 3 is an enlarged view of FIG. 2 at E;

FIG. 4 is a section D-D of FIG. 1;

fig. 5 and fig. 6 are schematic structural diagrams of a device for detecting a gap spline and a tooth surface deflection angle of a gear on a steering gear in an embodiment;

FIG. 7 is a schematic view of the structure of the upper end fixing mechanism;

FIG. 8 is a schematic view of the structure of a slide mounting clip (with a rotating handle);

FIG. 9 is a schematic view of the structure of the slide mounting clip (without the rotating handle);

FIG. 10 is a schematic structural view of a spline mounting fixture;

FIG. 11 is a schematic structural view of a two-point locating pin driver;

FIG. 12 is a schematic view of a single point dowel pin driver;

the figure indicates:

1-gear body, 2-notch spline structure, 3-gear structure, 4-base, 5-support plate, 6-rotating seat, 7-angle sensor, 8-display, 9-spline fixing mechanism, 901-two-point locating pin, 9011-pin head, 9012-spline locating end, 902-two-point locating pin driver, 903-spline fixing seat, 904-spline fixing clamp, 9041-spline clamp fixing seat, 9042-fixing bolt, 10-gear fixing mechanism, 1001-single point locating pin, 1002-single point locating pin driver, 11-clamping handle, 12-elastic clamping device, 1201-clamping transmission rod, 1202-clamping spring, 1203-limiting plate, 13-upper tip, 14-lower tip, 15-guide rail, 16-fixing groove, 17-upper end sliding seat, 18-slide fixing clamp, 1801-clamp through groove, 1802-slide bolt.

Detailed Description

The utility model will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present utility model is not limited to the following examples.

Examples:

as shown in fig. 5 and 6, a device for detecting a tooth surface deflection angle of a notched spline structure 2 and a tooth surface deflection angle of a gear structure 3 on a steering gear comprises: the device comprises a base 4, a supporting plate 5 fixedly arranged on the base 4, a rotating seat 6 rotatably arranged on the base 4, an angle sensor 7 connected with the rotating seat 6, an upper end fixing mechanism arranged on the supporting plate 5, a lower end fixing mechanism arranged on the rotating seat 6, a spline fixing mechanism 9 arranged on the supporting plate 5 and a gear fixing mechanism 10 arranged on the rotating seat 6.

The upper end fixing mechanism and the lower end fixing mechanism are used for vertically fixing two ends of the steering gear and enabling the steering gear to rotate freely. Specifically, the upper end fixing mechanism comprises a clamping handle 11, an elastic clamping device 12 and an upper center 13 which are sequentially connected; the lower end fixing mechanism comprises a lower center 14 arranged on the rotating seat 6. The two ends of the steering gear are respectively provided with a slot, and the upper center 13 and the lower center 14 are respectively embedded into the corresponding slots and clamp and fix the steering gear. In some preferred embodiments, the clamping handle 11 is a pull-up handle, as shown in fig. 8, the elastic clamping device 12 includes a clamping housing, a clamping transmission rod 1201 arranged in the clamping housing in an up-and-down moving manner, a limiting plate 1203 arranged on the side wall of the bottom end of the clamping transmission rod 1201, and a clamping spring 1202 arranged between the top of the clamping housing and the limiting plate 1203; the top end of the clamping transmission rod 1201 passes through the top of the clamping shell and is connected with the upper pull handle, and the top end of the upper center 13 passes through the bottom of the clamping shell and is connected with the bottom end of the clamping transmission rod 1201. When the clamping device is used, the clamping handle 11 can be pulled, the center 13 is lifted up through the clamping transmission rod 1201, and the clamping spring 1202 is compressed; after the steering gear is mounted, the steering gear is pressed by the elastic restoring force of the clamping spring 1202.

The spline fixing mechanism 9 comprises a double-point locating pin 901 for embedding the locating notch spline structure 2, and a double-point locating pin driving piece 902 for driving the double-point locating pin 901 to be embedded in or away from the notch spline structure 2; the gear fixing mechanism 10 includes a single-point positioning pin 1001 for embedding the positioning gear structure 3, and a single-point positioning pin driver 1002 for driving the single-point positioning pin 1001 to embed in or separate from the gear structure 3. As shown in fig. 7, the two-point positioning pin 901 includes a pin head 9011, and a spline positioning end 9012 disposed on top of the pin head 9011 and extending obliquely outward. These 2 spline locating ends 9012 correspond to points C1, C2 on the notched spline structure 2, respectively.

When the steering gear standard component is used, the steering gear standard component is firstly arranged between the upper end fixing mechanism and the lower end fixing mechanism, and the clamping handle 11 is operated to enable the upper center 13 to move downwards to enable the upper center 13 and the lower center 14 to respectively abut against the two ends of the steering gear standard component; and then rotating the standard component and operating the two-point positioning pin driving component 902 and the single-point positioning pin driving component 1002 to enable the two-point positioning pin 901 to be embedded into a pair of special-shaped teeth with relatively wide tooth grooves, namely the points C1 and C2 in fig. 3, and simultaneously enabling the single-point positioning pin 1001 to be embedded into a single tooth groove of the gear structure 3. At this time, the rotating seat 6 is fixed, the angle sensor 7 is zeroed, and the included angle between the notch spline of the standard sample and the tooth surface of the gear is recorded.

Then, the standard sample is replaced by the sample to be tested, clamping and fixing are carried out through the upper center and the lower center, the position of the sample to be tested is adjusted during fixing, the corresponding C1 point and the C2 point of the sample to be tested are close to the double-point locating pin 901, the single-point locating pin 1001 is aligned to the nearest tooth socket of the gear structure 3, then the single-point locating pin 1001 is fully inserted into the tooth socket, meanwhile, the rotating seat 6 is loosened, and the double-point locating pin 901 is inserted into the C1 point and the C2 point. If an offset angle exists between the notch spline and the gear tooth surface, the double-point locating pin 901 can drive the rotating seat 6 to rotate through the single-point locating pin 1001 while being inserted, and at the moment, a worker can obtain the offset angle between the notch spline and the gear tooth surface according to the rotating angle detected by the angle sensor 7:

for example, a K211 gear: the current standard component angle is 109.88 degrees; measuring a machined part, and displaying numerical values on an angular display: 0.12.00; the actual value of the part product is 12/60+109.88= 110.08 °.

In some preferred embodiments, the supporting plate 5 is provided with a guide rail 15 and a fixing groove 16 extending along the height direction; the upper end fixing mechanism comprises an upper end sliding seat 17 which is arranged on the guide rail 15 in a sliding way; the upper end sliding seat 17 is provided with a sliding seat fixing clamp 18 embedded in the fixing groove 16. The spline fixing mechanism 9 further includes a spline fixing base 903, and a spline fixing jig 904 provided on the spline fixing base 903 and fitted into the fixing groove 16. Through the cooperation structure of guide rail 15 and upper end sliding seat 17, can adjust top 13 position to adapt to the rotation gear of different length, also can adjust the embedded position of two-point locating pin 901 from top to bottom through fixed slot 16 simultaneously, thereby adapt to the rotation gear of different spline positions.

In some preferred embodiments, the slide fixing jig 18, as shown in fig. 8 to 9, includes a jig through slot 1801 provided at a side of the upper end sliding seat 17 and communicating with the fixing slot 16, a slide bolt 1802 screwed into the jig through slot 1801 and having a bottom end extending to a bottom of the fixing slot 16, a rotating handle provided at a top end of the slide bolt 1802, and a slide fixing slip pad provided at a bottom of the slide bolt 1802 and in frictional contact with the fixing slot 16. When the upper sliding seat 17 is moved to a set height in use, the sliding seat fixing anti-slip pad is abutted against the bottom of the fixing groove 16 by screwing the sliding seat bolt 1802, and the upper sliding seat 17 is fixed to the set height by using static friction force between the sliding seat fixing anti-slip pad and the fixing groove.

Similarly, as shown in fig. 10, the spline fixing clamp 904 includes a spline clamp fixing seat 9041, a threaded hole formed in the spline clamp fixing seat 9041 and communicated with the fixing groove 16, a fixing bolt 9042 screwed into the threaded hole and having a bottom end extending to the bottom of the fixing groove 16, and a spline fixing anti-slip pad provided at the bottom of the fixing bolt 9042 and in frictional contact with the fixing groove 16.

The two-point dowel pin drive 902 and the single-point dowel pin drive 1002 are translational push rods as shown in fig. 11-12.

In some preferred embodiments, the present embodiment further includes a display 8 electrically connected to the angle sensor 7 to facilitate the operator's visual acquisition of the deflection angle.

The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.

Claims (10)

1. The utility model provides a notch spline and gear tooth face deflection angle detection device on steering gear for detect the tooth face deflection angle of notch spline structure (2) and gear structure (3) on the steering gear, its characterized in that includes:

the device comprises a base (4), a supporting plate (5) fixedly arranged on the base (4), a rotating seat (6) rotatably arranged on the base (4), and an angle sensor (7) connected with the rotating seat (6);

the upper end fixing mechanism is arranged on the supporting plate (5) and the lower end fixing mechanism is arranged on the rotating seat (6) and is used for vertically fixing two ends of the steering gear and enabling the steering gear to rotate freely;

the spline fixing mechanism (9) is arranged on the supporting plate (5) and comprises a double-point locating pin (901) used for being embedded into the locating notch spline structure (2) and a double-point locating pin driving piece (902) used for driving the double-point locating pin (901) to be embedded into or far away from the notch spline structure (2); and

the gear fixing mechanism (10) is arranged on the rotating seat (6) and comprises a single-point locating pin (1001) used for being embedded into the locating gear structure (3) and a single-point locating pin driving piece (1002) used for driving the single-point locating pin (1001) to be embedded into or far away from the gear structure (3).

2. The device for detecting the deflection angle of the notched spline and the gear tooth surface on the steering gear according to claim 1 is characterized in that the upper end fixing mechanism comprises a clamping handle (11), an elastic clamping device (12) and an upper center (13) which are connected in sequence;

the lower end fixing mechanism comprises a lower center (14) arranged on the rotating seat (6);

the two ends of the steering gear are respectively provided with a slot, and the upper center (13) and the lower center (14) are respectively embedded into the corresponding slots and clamp and fix the steering gear.

3. The device for detecting the deflection angle of the notched spline and the gear tooth surface on the steering gear according to claim 2, wherein the clamping handle (11) is an upward pulling handle, and the elastic clamping device (12) comprises a clamping shell, a clamping transmission rod (1201) arranged in the clamping shell in an up-down moving manner, a limiting plate (1203) arranged on the side wall of the bottom end of the clamping transmission rod (1201), and a clamping spring (1202) arranged between the top of the clamping shell and the limiting plate (1203);

the top end of the clamping transmission rod (1201) passes through the top of the clamping shell and is connected with the upper pull handle, and the top end of the upper center (13) passes through the bottom of the clamping shell and is connected with the bottom end of the clamping transmission rod (1201).

4. The device for detecting the deflection angle of the notched spline and the gear tooth surface on the steering gear according to claim 2, wherein the supporting plate (5) is provided with a guide rail (15) and a fixed groove (16) which extend along the height direction; the upper end fixing mechanism comprises an upper end sliding seat (17) which is arranged on the guide rail (15) in a sliding way; the upper end sliding seat (17) is provided with a sliding seat fixing clamp (18) embedded in the fixing groove (16).

5. The device for detecting the deflection angle of the notched spline and the tooth surface of the gear on the steering gear according to claim 4, wherein the slide fixing clamp (18) comprises a clamp through groove (1801) which is arranged on the side edge of the upper end sliding seat (17) and is communicated with the fixing groove (16), a slide bolt (1802) which is in threaded connection with the clamp through groove (1801) and the bottom end of which extends to the bottom of the fixing groove (16), a rotating handle which is arranged at the top end of the slide bolt (1802), and a slide fixing anti-slip pad which is arranged at the bottom of the slide bolt (1802) and is in friction contact with the fixing groove (16).

6. The device for detecting the deflection angle of the notched spline and the gear tooth surface on the steering gear according to claim 4, wherein the spline fixing mechanism (9) further comprises a spline fixing seat (903) and a spline fixing clamp (904) which is arranged on the spline fixing seat (903) and is embedded in the fixing groove (16).

7. The device for detecting the deflection angle of the notched spline and the tooth surface of the gear on the steering gear according to claim 6, wherein the spline fixing clamp (904) comprises a spline clamp fixing seat (9041), a threaded hole formed in the spline clamp fixing seat (9041) and communicated with the fixing groove (16), a fixing bolt (9042) which is in threaded connection with the threaded hole and the bottom end of which extends to the bottom of the fixing groove (16), and a spline fixing anti-slip pad which is arranged at the bottom of the fixing bolt (9042) and in friction contact with the fixing groove (16).

8. The device for detecting the deflection angle of a notched spline and a gear tooth surface on a steering gear according to claim 1, wherein the two-point positioning pin (901) comprises a pin head (9011) and a spline positioning end (9012) which is arranged at the top of the pin head (9011) and extends obliquely outwards.

9. The device for detecting the deflection angle of a notched spline and a gear tooth surface on a steering gear according to claim 1, wherein the single-point locating pin driving piece (1002) and the double-point locating pin driving piece (902) are translational push rods.

10. A device for detecting the deflection angle of a notched spline and a gear tooth surface on a steering gear according to claim 1, further comprising a display (8) electrically connected to the angle sensor (7).

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