阅读说明：本技术 一种汽车同步器齿毂滑块槽对称度检测装置 (Automobile synchronizer gear hub slider slot symmetry degree detection device ) 是由 谢小辉 陈冬平 徐克忠 邹雪雪 吴晓华 于 2020-07-07 设计创作，主要内容包括：本发明公开了一种汽车同步器齿毂滑块槽对称度检测装置,该检测装置旨在解决现今汽车同步器齿毂滑块槽对称度检测存在测量结果误差大,无法实现准确测量的技术问题；其包括底座,以及底座上横向开有的横向进给槽,横向进给槽内安装有进给丝杆,进给丝杆上安装有可横向移动的进给滑块,进给滑块一侧固定安装有用于对齿毂测量进行定位的形状互补定位块一,横向进给槽的底座上固定安装有用于对齿毂测量进行定位的形状互补定位块二,形状互补定位块二可通过形状互补定位块一的横向移动实现在形状轮廓上的相互交错互补。该检测装置消除了因齿毂外花键齿厚大小以及齿毂滑块槽宽大小引起的误差,有效地实现了测量齿毂滑块槽对外花键齿的对称度数值。(The invention discloses a device for detecting the symmetry degree of a gear hub sliding block groove of an automobile synchronizer, which aims to solve the technical problems that the measurement result error is large and accurate measurement cannot be realized in the traditional detection of the symmetry degree of the gear hub sliding block groove of the automobile synchronizer; the tooth hub measuring and positioning device comprises a base and a transverse feeding groove formed in the base in the transverse direction, a feeding screw rod is installed in the transverse feeding groove, a feeding sliding block capable of moving transversely is installed on the feeding screw rod, a first shape complementary positioning block used for positioning the tooth hub in a measuring mode is fixedly installed on one side of the feeding sliding block, a second shape complementary positioning block used for positioning the tooth hub in a measuring mode is fixedly installed on the base of the transverse feeding groove, and the second shape complementary positioning block can achieve mutual staggered complementation on a shape outline through the transverse movement of the first shape complementary positioning block. The detection device eliminates errors caused by the tooth thickness of the external spline of the gear hub and the width of the sliding block groove of the gear hub, and effectively realizes the measurement of the symmetry value of the external spline teeth of the sliding block groove of the gear hub.)

1. The device for detecting the symmetry degree of the gear hub sliding block groove of the automobile synchronizer is characterized by comprising a base and a transverse feeding groove which is formed in the base in a transverse mode, a feeding screw rod is installed in the transverse feeding groove, a feeding sliding block capable of moving transversely is installed on the feeding screw rod, a first shape complementary positioning block for positioning the gear hub in measurement is fixedly installed on one side of the feeding sliding block, a second shape complementary positioning block for positioning the gear hub in measurement is fixedly installed on the base of the transverse feeding groove, the second shape complementary positioning block can achieve mutual staggered complementation on a shape outline through transverse movement of the first shape complementary positioning block, a transverse guide rail is fixedly installed on the rear side of the transverse feeding groove in parallel, a transverse sliding block capable of moving transversely is installed in the transverse guide rail, and first guide rail baffles for limiting the left end and the right end of the transverse sliding block are fixedly installed on the bases of the left end and the right end of the transverse guide rail respectively The transverse sliding block is fixedly provided with a guide rail connecting block, the guide rail connecting block is fixedly provided with a longitudinal guide rail which is vertical to the transverse guide rail, a longitudinal sliding block capable of moving longitudinally is arranged in the longitudinal guide rail, a guide rail baffle II for limiting the front end of the longitudinal sliding block is fixedly arranged on a guide rail connecting block at the front end of the longitudinal guide rail, a positioning baffle plate for limiting the rear end of the longitudinal slide block is fixedly arranged on the guide rail connecting block at the rear end of the longitudinal guide rail, a spring is connected between the longitudinal sliding block and the positioning baffle plate, a cylindrical measuring head for measuring the position of the spline teeth of the gear hub is fixedly arranged on the front side of the longitudinal sliding block, the guide rail connecting block is characterized in that a detection block is fixedly mounted on one side of the guide rail connecting block, a dial indicator is fixedly mounted on the base on one side of the detection block, and a measuring head of the dial indicator is in contact with the detection block.

2. The device for detecting the symmetry degree of the slider slot of the gear hub of the automobile synchronizer as claimed in claim 1, wherein the first complementary-shaped positioning block is a concave positioning block, the second complementary-shaped positioning block is a convex positioning block, and the convex positioning blocks can realize mutual staggered complementation on the shape contour by the transverse movement of the concave positioning block.

3. The device for detecting the symmetry of the slider slots of the gear hub of the automobile synchronizer as claimed in claim 1, wherein the spring is a compression spring.

4. The apparatus as claimed in claim 1, wherein the front end surface of the cylindrical measuring head is cylindrical.

5. The device for detecting the symmetry degree of the slider grooves of the gear hub of the automobile synchronizer as claimed in claim 1, wherein a positioning foot pad with adjustable height is installed around the bottom of the base.

6. The device for detecting the symmetry of the slider grooves in the gear hub of the automobile synchronizer as claimed in claim 5, wherein the positioning foot pad is made of rubber.

Technical Field

The invention belongs to the field of production of automobile parts, and particularly belongs to a device for detecting the symmetry degree of a gear hub sliding block groove of an automobile synchronizer.

Background

The gear hub is one of necessary parts in the structure of devices such as an automobile synchronizer, is an important part for adjusting the rotating speed and enabling gears to be mutually jointed in the synchronizer, is also a key for realizing quick gear shifting of an automobile, and therefore the requirement on the machining precision is high. The gear hub is usually of a three-groove structure, namely, the outer ring is a gear body and three sliding block grooves which are uniformly distributed, and the requirement of symmetry is also met relative to external spline teeth on two sides of each sliding block groove.

In the production process of present tooth hub, to the detection of tooth hub slider groove symmetry, can only use slide caliper or three-groove position degree to examine the utensil and go on nowadays, it can realize certain detection effect respectively, nevertheless also has certain shortcoming separately. Namely, when the vernier caliper is used for detection, the spline tooth surface is an involute, so that accurate measurement cannot be realized, and the error of a measurement result is large; however, when the three-groove position degree gauge is used for detection, because the widths of the slider grooves are inconsistent, errors caused by groove width variation cannot be eliminated, and the requirements in actual operation are difficult to meet. Therefore, the problem of the symmetry degree of the gear hub sliding block slot of the automobile synchronizer is improved urgently to ensure the symmetry degree detection accuracy of the gear hub sliding block slot of the automobile synchronizer.

Disclosure of Invention

(1) Technical problem to be solved

Aiming at the defects of the prior art, the invention aims to provide a device for detecting the symmetry degree of a gear hub sliding block groove of an automobile synchronizer, which aims to solve the technical problems that the measurement result error is large and the accurate measurement cannot be realized in the traditional detection of the symmetry degree of the gear hub sliding block groove of the automobile synchronizer; the detection device eliminates errors caused by the tooth thickness of the external spline of the gear hub and the width of the sliding block groove of the gear hub, effectively realizes the measurement of the symmetry numerical value of the external spline teeth of the sliding block groove of the gear hub, and has high detection precision.

(2) Technical scheme

In order to solve the technical problem, the invention provides a device for detecting the symmetry degree of a gear hub sliding block groove of an automobile synchronizer, which comprises a base and a transverse feeding groove transversely formed on the base, wherein a feeding screw rod is installed in the transverse feeding groove, a feeding sliding block capable of transversely moving is installed on the feeding screw rod, a first shape complementary positioning block for positioning the gear hub measurement is fixedly installed on one side of the feeding sliding block, a second shape complementary positioning block for positioning the gear hub measurement is fixedly installed on the base of the transverse feeding groove, the second shape complementary positioning block can realize mutual staggered complementation on the shape outline through the transverse movement of the first shape complementary positioning block, a transverse guide rail is fixedly installed on the rear side of the transverse feeding groove in parallel, and a transverse sliding block capable of transversely moving is installed in the transverse guide rail, the base at the left end and the right end of the transverse guide rail is respectively and fixedly provided with a first guide rail baffle plate for limiting the left end and the right end of the transverse slide block, the transverse slide block is fixedly provided with a guide rail connecting block, the guide rail connecting block is fixedly provided with a longitudinal guide rail which is vertical to the transverse guide rail, the longitudinal guide rail is internally provided with a longitudinal slide block which can move longitudinally, the guide rail connecting block at the front end of the longitudinal guide rail is fixedly provided with a second guide rail baffle plate for limiting the front end of the longitudinal slide block, the guide rail connecting block at the rear end of the longitudinal guide rail is fixedly provided with a positioning baffle plate for limiting the rear end of the longitudinal slide block, a spring is connected between the longitudinal slide block and the positioning baffle plate, the front side of the longitudinal slide block is fixedly provided with a cylindrical measuring head for measuring the, the base on one side of the detection block is fixedly provided with a dial indicator, and a measuring head of the dial indicator is in contact with the detection block.

When the detection device is used for detecting the symmetry degree of the gear hub sliding block slot of the automobile synchronizer with the three-slot structure, firstly, the gear hub of the synchronizer is placed on a bottom plate, the gear hub sliding block slot is aligned and clamped into a complementary positioning block I and a complementary positioning block II which are staggered mutually, the complementary positioning block is enabled to slide towards the right side by rotating a feeding screw rod, the complementary positioning block I and the complementary positioning block II are enabled to be completely attached to the left side surface and the right side surface of the gear hub sliding block slot respectively until the complementary positioning block I and the complementary positioning block II are completely attached to the left side surface and the right side surface of the gear hub sliding block slot, and therefore the gear hub sliding; then, through the transverse and longitudinal sliding of the transverse sliding block and the longitudinal sliding block in the transverse guide rail and the longitudinal guide rail, a cylindrical measuring head on the front side of the longitudinal sliding block extends into a tooth groove of the gear hub, the cylindrical measuring head is tightly pressed in the tooth groove of the gear hub through the acting force of a spring, the spline teeth of the gear hub are subjected to position measurement by using the cylindrical measuring head, a detection block fixedly installed on one side of a guide rail connecting block is combined, and the position relation of the measuring head of the dial indicator and the detection block is contacted, the reading A of the dial indicator at the moment is read, and the reading A is the distance from the tooth groove on one side of the external spline of the gear hub to the; and finally, placing the reverse side of the gear hub on the bottom plate, aligning the same slider groove of the gear hub, clamping the same slider groove into the first complementary positioning block and the second complementary positioning block, repeating the steps, reading a reading B of the dial indicator, wherein the reading B reflects the distance from the tooth groove on the other side of the external spline of the gear hub to the slider groove, and the difference between the reading A and the reading B is the actual value of the symmetry of the external spline teeth of the slider groove, namely the symmetry of the slider groove of the gear hub of the synchronizer is detected.

Preferably, the first shape complementary positioning block is a concave positioning block, the second shape complementary positioning block is a convex positioning block, and the convex positioning blocks can realize mutual staggered complementation on shape profiles through the transverse movement of the concave positioning block; through the complementation of the concave positioning block and the convex positioning block, the optimal mutual staggered complementation of the concave positioning block and the convex positioning block on the shape and the contour is realized by utilizing the transverse movement of the concave positioning block.

Preferably, the spring is a compression spring; the positioning baffle plate is convenient to elastically limit the rear end of the longitudinal sliding block, and the cylindrical measuring head is tightly pressed in a tooth groove of the tooth hub.

Preferably, the foremost surface of the cylindrical measuring head is cylindrical; this is convenient for the cylinder measuring head to carry out position measurement to the spline tooth of tooth hub.

Preferably, height-adjustable positioning foot pads are arranged on the periphery of the bottom of the base; therefore, the flatness of the base can be ensured, and the detection on the symmetry degree of the synchronizer gear hub sliding block slots is more accurate.

Furthermore, the positioning foot pad is made of rubber; this facilitates adjustment of the flatness of the base.

(3) Advantageous effects

Compared with the prior art, the invention has the beneficial effects that:

on one hand, the detection device of the invention realizes that the cylindrical measuring head can slide freely in the transverse direction and the longitudinal direction by installing the cylindrical measuring head on the transverse sliding block and the longitudinal sliding block in the transverse guide rail and the longitudinal guide rail, and the cylindrical measuring head is tightly pressed in the tooth grooves of the gear hub by the acting force of the spring, so that the measurement error caused by the tooth thickness of the external spline of the gear hub is eliminated by utilizing the sliding of the cylindrical measuring head in the transverse direction and the longitudinal direction; on the other hand, the first complementary positioning block and the second complementary positioning block which are mutually staggered and complementary in shape and outline are combined, and the first complementary positioning block in shape and outline is arranged on the feeding sliding block, so that errors caused by the width of the gear hub sliding block groove are eliminated through the sliding of the sliding table, and the gear hub sliding block groove is accurately positioned.

In addition, the detection device disclosed by the invention is simple and compact in structure and high in detection precision, can quickly and accurately detect the symmetry degree of the synchronizer gear hub sliding block slot, meets the actual production requirement, and is strong in reliability of each connecting component.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, it is obvious that the drawings in the following description are only one embodiment of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the detecting device of the present invention.

Fig. 2 is a schematic structural diagram of fig. 1 in an operating state.

Fig. 3 is a top view of fig. 2.

The labels in the figures are: 1-base, 2-transverse feeding groove, 3-feeding screw rod, 4-feeding slide block, 5-concave positioning block, 6-transverse guide rail, 7-transverse slide block, 8-guide rail baffle I, 9-guide rail connecting block, 10-longitudinal guide rail, 11-longitudinal slide block, 12-guide rail baffle II, 13-positioning baffle, 14-pressure spring, 15-cylindrical measuring head, 16-convex positioning block, 17-detecting block, 18-dial indicator, 18 a-measuring head, 19-positioning foot pad and 20-gear hub.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood and obvious, the technical solutions in the embodiments of the present invention are clearly and completely described below to further illustrate the invention, and obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments.

The specific embodiment is a device for detecting symmetry of a gear hub slider slot of an automobile synchronizer, and the specific structure of the device is shown in fig. 1-3, fig. 1 is a schematic structural diagram, fig. 2 is a schematic structural diagram in a working state, and fig. 3 is a top view of fig. 1; the detection device comprises a base and a transverse feeding groove which is arranged on the base in a transverse direction, wherein a feeding screw rod is arranged in the transverse feeding groove, a feeding sliding block which can move transversely is arranged on the feeding screw rod, a concave positioning block which is used for positioning the measurement of a gear hub is fixedly arranged on one side of the feeding sliding block, a convex positioning block which is used for positioning the measurement of the gear hub is fixedly arranged on the base of the transverse feeding groove, the convex positioning blocks can realize mutual staggered complementation on the shape profile through the transverse movement of the concave positioning block, a transverse guide rail is fixedly arranged on the rear side of the transverse feeding groove in parallel, a transverse sliding block which can move transversely is arranged in the transverse guide rail, a first guide rail baffle which is used for limiting the left end and the right end of the transverse sliding block is fixedly arranged on the base of the left end and the right end of the transverse guide rail, a, but install longitudinal movement's vertical slider in the longitudinal rail, fixed mounting has on the guide rail connecting block of longitudinal rail front end and is used for the spacing guide rail baffle two to the longitudinal rail front end, fixed mounting has on the guide rail connecting block of longitudinal rail rear end and is used for carrying out the spacing positioning baffle to the longitudinal rail rear end, be connected with the spring between longitudinal rail and the positioning baffle, longitudinal rail front side fixed mounting has and is used for carrying out position measurement's cylinder measuring head to the spline tooth of tooth hub, guide rail connecting block one side fixed mounting has the detection piece, fixed mounting has the percentage table on the base of detection piece one side, and the measuring head of percentage table contacts with the detection piece.

When the detection device is used for detecting the symmetry degree of the gear hub sliding block groove of the automobile synchronizer with the three-groove structure, firstly, the gear hub of the synchronizer is placed on a bottom plate, the gear hub sliding block groove is aligned and clamped into a concave positioning block and a convex positioning block which are mutually staggered, the convex positioning block slides towards the right side by rotating a feed screw rod, and the concave positioning block and the convex positioning block are respectively completely attached to the left side surface and the right side surface of the gear hub sliding block groove until the concave positioning block and the convex positioning block are completely attached to the left side surface and the right side surface of the gear hub sliding block groove, so that the gear hub sliding block groove is accurately positioned; then, through the transverse and longitudinal sliding of the transverse sliding block and the longitudinal sliding block in the transverse guide rail and the longitudinal guide rail, a cylindrical measuring head on the front side of the longitudinal sliding block extends into a tooth groove of the gear hub, the cylindrical measuring head is tightly pressed in the tooth groove of the gear hub through the acting force of a pressure spring, the spline teeth of the gear hub are subjected to position measurement by using the cylindrical measuring head, a detection block fixedly installed on one side of a guide rail connecting block is combined, and the position relation of the measuring head of the dial indicator and the detection block is contacted, the reading A of the dial indicator at the moment is read, and the reading A is the distance from the tooth groove on one side of the external spline of the gear hub to; and finally, placing the reverse side of the gear hub on the bottom plate, aligning the same sliding block groove of the gear hub, clamping the same sliding block groove into the concave positioning block and the convex positioning block, repeating the steps, reading a reading B of the dial indicator, wherein the reading B reflects the distance from the tooth groove on the other side of the external spline of the gear hub to the sliding block groove, and the difference value between the reading A and the reading B is the actual value of the symmetry of the external spline teeth of the sliding block groove, namely the symmetry of the sliding block groove of the gear hub of the synchronizer is detected.

The first guide rail baffle plates at the left end and the right end of the transverse guide rail can limit the left end and the right end of the transverse sliding block, the second guide rail baffle plates at the front end of the longitudinal guide rail can limit the front end of the longitudinal sliding block, the guide rail connecting blocks at the rear end of the longitudinal guide rail and the pressure springs between the guide rail connecting blocks can limit the rear end of the longitudinal sliding block, and the cylindrical measuring head is tightly pressed in a tooth groove of the tooth hub under the action of the pressure springs.

The detection device of the technical scheme has the advantages that the cylindrical measuring head can slide freely in the transverse direction and the longitudinal direction by being arranged on the transverse sliding block and the longitudinal sliding block in the transverse guide rail and the longitudinal guide rail, and is tightly pressed in the tooth grooves of the gear hub by the acting force of the pressure spring, so that the measurement error caused by the thickness of the external spline teeth of the gear hub is eliminated by utilizing the sliding of the cylindrical measuring head in the transverse direction and the longitudinal direction; on the other hand, by combining the concave positioning blocks and the convex positioning blocks with mutually staggered and complementary shapes and profiles and utilizing the concave positioning blocks arranged on the feeding sliding block, the error caused by the width of the gear hub sliding block groove is eliminated through the sliding of the sliding table, and the accurate positioning of the gear hub sliding block groove is realized.

In addition, the detection device of the technical scheme is simple and compact in structure, high in detection precision, capable of rapidly and accurately detecting the symmetry degree of the synchronizer gear hub sliding block slot, capable of meeting the actual production requirement, and strong in reliability of each connecting component.

Having thus described the principal technical features and basic principles of the invention, and the advantages associated therewith, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description is described in terms of various embodiments, not every embodiment includes only a single embodiment, and such descriptions are provided for clarity only, and those skilled in the art will recognize that the embodiments described herein can be combined as a whole to form other embodiments as would be understood by those skilled in the art.