Internal spline cross-ball distance detection device

Abstract

The invention relates to the technical field of automobile manufacturing, in particular to an internal spline cross-ball distance detection device. Wherein one end of the sliding rod is inserted into the sleeve and connected with one end of the ejector rod, the sliding rod and the ejector rod are both in sliding connection with the sleeve in the axial direction, the other end of the ejector rod is concavely provided with a conical surface, and the first connecting plate and the second connecting plate are oppositely arranged at an interval and are both in sliding connection with the sleeve in the radial direction; the first connecting plate and the second connecting plate can move along the conical surface, the first measuring ball is connected to the first connecting plate, and the second measuring ball is connected to the second connecting plate. According to the device, a sliding rod is pressed to enable a first connecting plate and a second connecting plate to move along a conical surface, so that a first measuring ball and a second measuring ball are driven to contract inwards in the radial direction, the sliding rod is released, the first measuring ball and the second measuring ball are expanded outwards in the radial direction, the first measuring ball and the second measuring ball abut against corresponding tooth grooves of an internal spline, and a dial gauge displays the ball crossing distance. The detection efficiency can be improved, and the detection time is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of automobile manufacturing, and in particular to a device for detecting an internal spline cross-ball distance. Background Art

[0002] The cross-ball distance is a key parameter of gear splines and determines the fitability of gear splines. Excessive tolerance of the cross-ball distance will lead to inability to assemble or insufficient strength, which will cause the gear to be scrapped. Therefore, in the spline manufacturing process, the detection of the cross-ball distance is very important. As the market's requirements for transmission shifting performance increase, a large number of inverted cone internal spline designs have appeared in the industry. Such designs increase the difficulty of detecting the spline cross-ball distance. The cross-ball distance detection of inverted cone splines increases the requirement for axial detection distance relative to conventional cross-ball distance detection. The detection requirements and principles of conventional external splines and internal inverted cone splines are different. Conventional external spline detection is a one-way distance and inward detection, while internal inverted cone splines are two-way relationship detection and outward detection. Therefore, the design principles of the equipment are also different.

[0003] Due to the importance of the internal spline size of the inverted cone, the current industry attaches great importance to this size. The current detection method is to use a gear measuring center device for simulation detection. Since the gear measuring center device is expensive and occupies a large area, it can only be used in the specific environment of the measuring room. Therefore, the part measurement needs to be removed from the machine tool after processing and then installed on the measuring center device for detection. The detection efficiency is low and the detection time is long, which is not suitable for high-frequency sampling in mass production.

[0004] Therefore, there is an urgent need for an internal spline cross-ball distance detection device to solve the above technical problems. Summary of the invention

[0005] The purpose of the present invention is to provide an internal spline cross-ball distance detection device, which can improve the detection efficiency and shorten the detection time.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The cam is connected to the second end of the guide rail, and the second end of the guide rail is connected to the second end of the guide rail by a toothed connection.

[0008] As a preferred technical solution of the above-mentioned internal spline cross-ball distance detection device, the internal spline cross-ball distance detection device also includes a first elastic member, the sliding rod is convexly provided with a first mounting portion, the inner wall of the sleeve is recessed with a second mounting portion, the two ends of the first elastic member are respectively connected to the first mounting portion and the second mounting portion, and the first elastic member is configured to apply a force to the first mounting portion so that the first mounting portion always has a tendency to move away from the second mounting portion.

[0009] As an optimal technical solution of the above-mentioned internal spline cross-ball distance detection device, the internal spline cross-ball distance detection device also includes a mounting plate, the sleeve is connected to the mounting plate, and the first connecting plate and the second connecting plate are both connected to the mounting plate in a radial sliding manner along the sleeve.

[0010] As a preferred technical solution of the above-mentioned internal spline cross-ball distance detection device, the internal spline cross-ball distance detection device also includes two sliding components, both of which are slidably connected to the mounting plate, one of the sliding components is arranged between the first connecting plate and the first measuring ball, and the other sliding component is arranged between the second connecting plate and the second measuring ball.

[0011] As an optimal technical solution of the above-mentioned internal spline cross-ball distance detection device, the sliding assembly includes a fixed part and a sliding part, the fixed part is installed on the mounting plate, the sliding part is slidably connected to the fixed part, and the first connecting plate and the second connecting plate are connected to the corresponding sliding parts.

[0012] As a preferred technical solution of the above-mentioned internal spline cross-ball distance detection device, the sliding assembly also includes a second elastic member, the two ends of the second elastic member are respectively connected to the fixed member and the sliding member, and the second elastic member is configured to apply a force to the sliding member so that the sliding member always has a tendency to move away from the sleeve.

[0013] As a preferred technical solution of the above-mentioned internal spline cross-ball distance detection device, the sliding assembly also includes a guide member, which is arranged on the fixed member, the sliding member is slidably connected to the guide member, and the sliding member can move along the length direction of the guide member.

[0014] As a preferred technical solution of the above-mentioned internal spline cross-ball distance detection device, the sliding assembly also includes a ball sleeve, the sliding member is slidably connected to the outer periphery of the guide member, and the ball sleeve is arranged between the sliding member and the guide member.

[0015] As an optimal technical solution of the above-mentioned internal spline cross-ball distance detection device, it is characterized in that the internal spline cross-ball distance detection device also includes a first mounting seat and a second mounting seat, the two ends of the first mounting seat are respectively connected to the first connecting plate and the first measuring ball, and the two ends of the second mounting seat are respectively connected to the second connecting plate and the second measuring ball.

[0016] As an optimal technical solution of the above-mentioned internal spline cross-ball distance detection device, it is characterized in that the internal spline cross-ball distance detection device also includes a guide plate, the guide plate is connected to the sleeve, the guide plate is provided with two guide grooves opposite to and spaced apart from each other, the first measuring ball and the second measuring ball are respectively arranged in the two guide grooves, and the first measuring ball and the second measuring ball can respectively move along the length direction of the corresponding guide groove.

[0017] Beneficial effects of the present invention:

[0018] The present invention provides a device for detecting the cross-ball distance of an internal spline, which comprises: a sleeve, a sliding rod, a push rod, a first connecting plate, a second connecting plate, a first measuring ball, a second measuring ball and an indicator gauge, one end of the sliding rod is inserted into the sleeve and connected to one end of the push rod, the sliding rod and the push rod are both connected to the sleeve in an axial sliding manner, the other end of the push rod is concavely provided with a conical surface, the first connecting plate and the second connecting plate are arranged opposite to each other and at intervals, the first connecting plate and the second connecting plate are both connected to the sleeve in a radial sliding manner, and the first connecting plate and the second connecting plate can both move along the conical surface to make the first connecting plate and the second connecting plate move away from or approach each other, the first measuring ball is connected to the first connecting plate, the second measuring ball is connected to the second connecting plate, the first measuring ball and the second measuring ball can both abut against the corresponding tooth grooves of the internal spline, and the indicator gauge is used to display the distance between the first measuring ball and the second measuring ball in real time. Compared with the prior art, the device presses the sliding rod to move the first connecting plate and the second connecting plate along the conical surface, thereby driving the first measuring ball and the second measuring ball to contract radially inward, and placing the first measuring ball and the second measuring ball inside the internal spline, releasing the sliding rod to reset the first connecting plate and the second connecting plate, thereby causing the first measuring ball and the second measuring ball to expand radially outward, so that the first measuring ball and the second measuring ball are against the corresponding tooth grooves of the internal spline, and the indicator shows the distance between the first measuring ball and the second measuring ball, which can improve the detection efficiency. At the same time, it can realize online detection without disassembling parts and shorten the detection time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0020] Figure 1 A structural cross-sectional view of an internal spline cross-ball distance detection device provided by an embodiment of the present invention;

[0021] Figure 2 A first structural schematic diagram of an internal spline cross-ball distance detection device provided in an embodiment of the present invention;

[0022] Figure 3 A second structural schematic diagram of the internal spline cross-ball distance detection device provided by an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of the structure of a sliding assembly provided in an embodiment of the present invention;

[0024] Figure 5 A structural cross-sectional view of a sliding assembly provided by an embodiment of the present invention;

[0025] Figure 6 A schematic structural diagram of the working structure of the internal spline cross-ball distance detection device provided in an embodiment of the present invention.

[0026] In the figure:

[0027] 1. Sleeve; 101. Long through hole; 2. Sliding rod; 3. Push rod; 4. First connecting plate; 5. Second connecting plate; 6. First measuring ball; 7. Second measuring ball; 8. Indicator; 81. Adjustment needle; 9. First elastic member; 10. Mounting plate; 11. Sliding assembly; 111. Fixing member; 112. Sliding member; 113. Second elastic member; 114. Guide member; 115. Ball bearing sleeve; 12. First mounting member Seat; 13, second mounting seat; 14, guide plate; 141, guide groove; 15, screw plug; 16, bushing; 17, end cover; 18, limit pin; 19, steel ball; 20, protective cover; 21, first measuring seat; 22, second measuring seat; 23, first gasket; 24, second gasket; 25, bolt; 26, guide head; 27, mounting piece; 28, meter cover; 29, meter clamp; 30, alloy column; 31, workpiece. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] like Figures 1 to 6 As shown, the present invention provides an internal spline cross-ball distance detection device, which includes: a sleeve 1, a sliding rod 2, a push rod 3, a first connecting plate 4, a second connecting plate 5, a first measuring ball 6, a second measuring ball 7 and an indicator 8.

[0033] Specifically, one end of the sliding rod 2 is inserted into the sleeve 1 and connected to one end of the push rod 3. The sliding rod 2 and the push rod 3 are both connected to the sleeve 1 in an axial sliding manner. The other end of the push rod 3 is concavely provided with a conical surface. The first connecting plate 4 and the second connecting plate 5 are opposite and spaced apart. The first connecting plate 4 and the second connecting plate 5 are both connected to the sleeve 1 in a radial sliding manner. The first connecting plate 4 and the second connecting plate 5 can both move along the conical surface to make the first connecting plate 4 and the second connecting plate 5 move away from or approach each other. The first measuring ball 6 is connected to the first connecting plate 4, and the second measuring ball 7 is connected to the second connecting plate 5. The first measuring ball 6 and the second measuring ball 7 can both be abutted against the corresponding tooth grooves of the internal spline. The indicator 8 is used to display the distance between the first measuring ball 6 and the second measuring ball 7 in real time. Compared with the prior art, the device presses the sliding rod 2 to move the first connecting plate 4 and the second connecting plate 5 along the conical surface, thereby driving the first measuring ball 6 and the second measuring ball 7 to contract radially inward, and placing the first measuring ball 6 and the second measuring ball 7 inside the internal spline, releasing the sliding rod 2 to reset the first connecting plate 4 and the second connecting plate 5, thereby expanding the first measuring ball 6 and the second measuring ball 7 radially outward, so that the first measuring ball 6 and the second measuring ball 7 abut against the corresponding tooth grooves of the internal spline, and the indicator 8 displays the distance between the first measuring ball 6 and the second measuring ball 7, which can improve the detection efficiency, and at the same time, can be handheld and operated without disassembling parts, so as to realize online detection and shorten the detection time. Furthermore, the first connecting plate 4 and the second connecting plate 5 are L-shaped.

[0034] Optionally, the internal spline cross-ball distance detection device also includes a first elastic member 9, the sliding rod 2 is convexly provided with a first mounting portion, the inner wall of the sleeve 1 is recessed with a second mounting portion, the two ends of the first elastic member 9 are respectively connected to the first mounting portion and the second mounting portion, and the first elastic member 9 is configured to apply a force to the first mounting portion so that the first mounting portion always tends to move away from the second mounting portion. Specifically, the internal spline cross-ball distance detection device also includes a plug screw 15 and a bushing 16. The plug screw 15 is arranged on the inner periphery of the sleeve 1 and is located at the top of the sleeve 1. The plug screw 15 is convexly provided with a first limit block. The outer wall of the sliding rod 2 can slide relative to the inner wall of the first limit block. The first mounting portion can abut against the end face of the first limit block, which can limit the upward displacement of the sliding rod 2. The bushing 16 is arranged on the inner periphery of the sleeve 1. The outer wall of the sliding rod 2 can slide relative to the inner wall of the bushing 16, which can ensure that the sliding rod 2 moves axially to prevent deviation. The bushing 16 is concavely provided with a second mounting portion. The first elastic member 9 is arranged between the first mounting portion and the second mounting portion and is always in a compressed state, which can enable the sliding rod 2 to automatically reset when the external force is removed. Further, the first elastic member 9 is a compression spring.

[0035] Optionally, the internal spline cross-ball distance detection device also includes an end cover 17, which is connected to the sliding rod 2. The staff can press the end cover 17 to make the sliding rod 2 move downward, thereby compressing the first elastic member 9; the end cover 17 can be abutted against the top end surface of the sleeve 1, and can limit the downward displacement of the sliding rod 2.

[0036] Optionally, the internal spline cross-ball distance detection device also includes a limit pin 18, one end of the limit pin 18 is installed on the sliding rod 2, the sleeve 1 is provided with a long through hole 101, and the other end of the limit pin 18 is arranged in the long through hole 101. The limit pin 18 can move along the length direction of the long through hole 101 and can be against the hole wall of the long through hole 101, thereby limiting the movement displacement of the sliding rod 2.

[0037] Optionally, the internal spline cross-ball distance detection device also includes two steel balls 19, which are respectively installed on the top of the first connecting plate 4 and the second connecting plate 5. The spherical surfaces of the two steel balls 19 are against the conical surface. The spherical surface of the steel ball 19 is smooth, which can reduce friction, facilitate the sliding of the steel ball 19 along the conical surface, reduce the pressing force, and facilitate use.

[0038] Optionally, the internal spline cross-ball distance detection device also includes a mounting plate 10, the sleeve 1 is connected to the mounting plate 10, and the first connecting plate 4 and the second connecting plate 5 are both connected to the mounting plate 10 in a radial sliding manner along the sleeve 1, which can improve the stability of the detection device.

[0039] Optionally, the internal spline cross-ball distance detection device also includes two sliding components 11, both of which are slidably connected to the mounting plate 10, wherein one sliding component 11 is arranged between the first connecting plate 4 and the first measuring ball 6, and the other sliding component 11 is arranged between the second connecting plate 5 and the second measuring ball 7, so that the first measuring ball 6 and the second measuring ball 7 can slide smoothly, thereby reducing the friction between the first measuring ball 6 and the second measuring ball 7 and the mounting plate 10.

[0040] Further, the sliding assembly 11 includes a fixing member 111 and a sliding member 112, the fixing member 111 is mounted on the mounting plate 10, the sliding member 112 is slidably connected to the fixing member 111, and the first connecting plate 4 and the second connecting plate 5 are connected to the corresponding sliding member 112. Specifically, the fixing member 111 is fixed to the mounting plate 10, the two ends of one sliding member 112 are respectively fixedly connected to the first connecting plate 4 and the first measuring ball 6, the first connecting plate 4 drives the sliding member 112 to slide radially, and the sliding member 112 drives the first measuring ball 6 to slide radially, and the two ends of another sliding member 112 are respectively fixedly connected to the second connecting plate 5 and the second measuring ball 7, the second connecting plate 5 drives the sliding member 112 to slide radially, and the sliding member 112 drives the second measuring ball 7 to slide radially.

[0041] Optionally, the sliding assembly 11 further includes a second elastic member 113, the two ends of which are respectively connected to the fixed member 111 and the sliding member 112, and the second elastic member 113 is configured to give a force to the sliding member 112 so that the sliding member 112 always has a tendency to move away from the sleeve 1. Specifically, the sliding member 112 is slidably connected to the inside of the fixed member 111, the two ends of the second elastic member 113 are respectively connected to the inner wall of the fixed member 111 and the sliding member 112, and the second elastic member 113 is close to the sleeve 1 relative to the sliding member 112, which can ensure that when the external force is removed, the sliding member 112 can move radially outward under the action of the second elastic member 113, thereby ensuring that the first measuring ball 6 and the second measuring ball 7 expand outward and abut against the corresponding tooth grooves. Further, the second elastic member 113 is a compression spring.

[0042] Optionally, the sliding assembly 11 further includes a guide 114, the guide 114 is disposed on the fixed member 111, the sliding member 112 is slidably connected to the guide 114, and the sliding member 112 can move along the length direction of the guide 114. Specifically, the two ends of the guide 114 are respectively connected to the inner wall of the fixed member 111, and the sliding member 112 is slidably sleeved on the outer periphery of the guide 114, so that the sliding member 112 can move along the length direction of the guide 114 to prevent the sliding member 112 from deflecting. Further, in the present embodiment, the sliding assembly 11 is provided with two guides 114, and the two guides 114 are arranged at intervals, so that the sliding member 112 can move more stably along the length direction of the guide 114. Of course, in some other embodiments, the number of the guides 114 is determined according to actual conditions, which will not be repeated here.

[0043] Optionally, the sliding assembly 11 further includes a ball sleeve 115 , the sliding member 112 is slidably connected to the outer periphery of the guide member 114 , and the ball sleeve 115 is disposed between the sliding member 112 and the guide member 114 , which can reduce friction and enable the sliding member 112 to move smoothly along the guide member 114 .

[0044] Optionally, the internal spline cross-ball distance detection device also includes two protective covers 20, and the two protective covers 20 are arranged in a one-to-one correspondence with the two sliding components 11. The protective covers 20 are installed on the mounting plate 10, and the sliding components 11 are covered inside the protective covers 20 to prevent the sliding components 11 from being damaged.

[0045] Optionally, the internal spline cross-ball distance detection device further includes a first measuring seat 21 and a second measuring seat 22, the first measuring seat 21 is arranged between the first measuring ball 6 and the sliding member 112, and the second measuring seat 22 is arranged between the second measuring ball 7 and the sliding member 112. Further, the internal spline cross-ball distance detection device further includes a first gasket 23 and a second gasket 24, a bolt 25 sequentially passes through the first measuring seat 21 and the first gasket 23 and is fixedly connected to the sliding member 112, and the bolt 25 sequentially passes through the second measuring seat 22 and the second gasket 24 and is fixedly connected to the sliding member 112, which can prevent the bolt 25 from loosening. Further, the first measuring seat 21 and the second measuring seat 22 are L-shaped.

[0046] Optionally, the internal spline cross-ball distance detection device further includes a first mounting seat 12 and a second mounting seat 13, wherein the two ends of the first mounting seat 12 are respectively connected to the first connecting plate 4 and the first measuring ball 6, and the two ends of the second mounting seat 13 are respectively connected to the second connecting plate 5 and the second measuring ball 7. Specifically, the two ends of the first mounting seat 12 are respectively connected to the first measuring seat 21 and the first measuring ball 6, which can improve the stability of the connection between the first measuring seat 21 and the first measuring ball 6, and the two ends of the second mounting seat 13 are respectively connected to the second measuring seat 22 and the second measuring ball 7, which can improve the stability of the connection between the second measuring seat 22 and the second measuring ball 7.

[0047] Optionally, the internal spline cross-ball distance detection device further includes a guide plate 14, the guide plate 14 is connected to the sleeve 1, and the guide plate 14 is provided with two guide grooves 141 opposite to each other and spaced apart, the first measuring ball 6 and the second measuring ball 7 are respectively provided in the two guide grooves 141, and the first measuring ball 6 and the second measuring ball 7 can respectively move along the length direction of the corresponding guide groove 141. Specifically, the guide plate 14 is mounted on the mounting plate 10, the first mounting seat 12 and the second mounting seat 13 are respectively provided in the two guide grooves 141, the two sides of the first mounting seat 12 and the second mounting seat 13 are respectively against the two groove walls opposite to the two guide grooves 141, and can move along the length direction of the guide groove 141 to prevent the first measuring ball 6 and the second measuring ball 7 from being offset.

[0048] Optionally, the internal spline cross-ball distance detection device further includes a guide head 26, and the first measuring ball 6 and the second measuring ball 7 are both provided with a guide head 26, and the guide head 26 can be inserted into the tooth grooves adjacent to the first measuring ball 6 and the second measuring ball 7, which can improve the accuracy of detection. In this embodiment, the first measuring ball 6 and the second measuring ball 7 are both provided with two guide heads 26, and the two guide heads 26 are respectively located on both sides of the first measuring ball 6 and the second measuring ball 7. Of course, in some other embodiments, the number and installation position of the guide heads 26 are determined according to actual conditions, which will not be repeated here.

[0049] Optionally, the spline cross-ball distance detection device also includes a mounting member 27, the mounting member 27 is connected to the mounting plate 10, and the indicator gauge 8 is installed on the mounting member 27, which can improve the stability of the indicator gauge 8.

[0050] Furthermore, the spline cross-ball distance detection device also includes a meter cover 28, and the meter cover 28 is arranged on the outside of the indicator meter 8 to prevent the indicator meter 8 from being damaged.

[0051] Furthermore, the spline cross-ball distance detection device also includes a meter clamping sleeve 29 , which is installed on the mounting member 27 . The meter clamping sleeve 29 can clamp the indicator 8 to ensure the stability of the indicator 8 .

[0052] Optionally, the internal spline cross-ball distance detection device further includes an alloy column 30. In this embodiment, the meter adjustment needle 81 of the indicator 8 passes through and is exposed on the second connecting plate 5, the alloy column 30 is mounted on the first connecting plate 4, and the meter adjustment needle 81 is connected to the alloy column 30. When the indicator 8 is calibrated, the end cover 17 is pressed, and the first measuring ball 6 and the second measuring ball 7 are retracted through the internal transmission of the detection device. After the first measuring ball 6 and the second measuring ball 7 are quickly found through the guide head 26, the first measuring ball 6 and the second measuring ball 7 are placed in the measured tooth of the calibration piece, and the mounting plate 10 and the calibration plate are connected. The starting surface of the calibration piece that meets the detection distance requirement is pressed tightly, and the end cover 17 is loosened. Due to the rebound effect of the second elastic member 113, the first measuring ball 6 and the second measuring ball 7 pop out and contact the teeth of the calibration piece. During this process, the alloy column 30 pushes and pulls the meter adjustment needle 81 to move, so that the indicator 8 displays a certain value. The reading of the indicator 8 is reset to zero. As the basis for detection and comparison, the calibration piece is replaced with the workpiece 31 to be measured, and the value of the workpiece 31 to be measured is read. The detection result of the workpiece 31 is the calibration value of the calibration piece plus the reading of the workpiece 31 to be measured. Of course, in some other embodiments, the meter adjustment needle 81 of the indicator 8 can also pass through and be exposed on the first connecting plate 4, the alloy column 30 is installed on the second connecting plate 5, and the meter adjustment needle 81 is connected to the alloy column 30. Further, the indicator 8 is a micrometer.

[0053] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An internal spline cross-ball distance detection device, characterized in that: include: A sleeve (1), a sliding rod (2), a push rod (3), a first connecting plate (4), a second connecting plate (5), a first measuring ball (6), a second measuring ball (7) and an indicator (8), one end of the sliding rod (2) is inserted into the sleeve (1) and connected to one end of the push rod (3), the sliding rod (2) and the push rod (3) are both connected to the sleeve (1) in an axial sliding manner, the other end of the push rod (3) is concavely provided with a conical surface, the first connecting plate (4) and the second connecting plate (5) are opposite to each other and are arranged at a distance, the first connecting plate (4) and the second connecting plate (5) are both connected to the sleeve (1) The first connecting plate (4) and the second connecting plate (5) are connected along the radial sliding connection of the sleeve (1), and the first connecting plate (4) and the second connecting plate (5) are both able to move along the conical surface so that the first connecting plate (4) and the second connecting plate (5) move away from or approach each other, the first measuring ball (6) is connected to the first connecting plate (4), the second measuring ball (7) is connected to the second connecting plate (5), the first measuring ball (6) and the second measuring ball (7) are both able to abut against the corresponding tooth grooves of the internal spline, and the indicator (8) is used to display the distance between the first measuring ball (6) and the second measuring ball (7) in real time.

2. The internal spline cross-ball distance detection device according to claim 1, characterized in that: The internal spline cross-ball distance detection device also includes a first elastic member (9), the sliding rod (2) is convexly provided with a first mounting portion, the inner wall of the sleeve (1) is concavely provided with a second mounting portion, the two ends of the first elastic member (9) are respectively connected to the first mounting portion and the second mounting portion, and the first elastic member (9) is configured to apply a force to the first mounting portion so that the first mounting portion always has a tendency to move away from the second mounting portion.

3. The internal spline cross-ball distance detection device according to claim 1, characterized in that: The internal spline cross-ball distance detection device also includes a mounting plate (10), the sleeve (1) is connected to the mounting plate (10), and the first connecting plate (4) and the second connecting plate (5) are both connected to the mounting plate (10) in a radially sliding manner along the sleeve (1).

4. The internal spline cross-ball distance detection device according to claim 3 is characterized in that: The internal spline cross-ball distance detection device also includes two sliding components (11), both of which are slidably connected to the mounting plate (10), one of which is arranged between the first connecting plate (4) and the first measuring ball (6), and the other sliding component (11) is arranged between the second connecting plate (5) and the second measuring ball (7).

5. The internal spline cross-ball distance detection device according to claim 4, characterized in that: The sliding assembly (11) comprises a fixing member (111) and a sliding member (112), wherein the fixing member (111) is mounted on the mounting plate (10), the sliding member (112) is slidably connected to the fixing member (111), and the first connecting plate (4) and the second connecting plate (5) are connected to the corresponding sliding member (112).

6. The internal spline cross-ball distance detection device according to claim 5, characterized in that: The sliding assembly (11) further comprises a second elastic member (113), two ends of which are respectively connected to the fixing member (111) and the sliding member (112), and the second elastic member (113) is configured to impart a force to the sliding member (112) so that the sliding member (112) always tends to move away from the sleeve (1).

7. The internal spline cross-ball distance detection device according to claim 5, characterized in that: The sliding assembly (11) further comprises a guide member (114), wherein the guide member (114) is arranged on the fixing member (111), the sliding member (112) is slidably connected to the guide member (114), and the sliding member (112) is capable of moving along the length direction of the guide member (114).

8. The internal spline cross-ball distance detection device according to claim 7, characterized in that: The sliding assembly (11) further comprises a ball sleeve (115), the sliding member (112) is slidably connected to the outer periphery of the guiding member (114), and the ball sleeve (115) is arranged between the sliding member (112) and the guiding member (114).

9. An internal spline cross-ball distance detection device according to any one of claims 1 to 8, characterized in that: The internal spline cross-ball distance detection device also includes a first mounting seat (12) and a second mounting seat (13), wherein two ends of the first mounting seat (12) are respectively connected to the first connecting plate (4) and the first measuring ball (6), and two ends of the second mounting seat (13) are respectively connected to the second connecting plate (5) and the second measuring ball (7).

10. An internal spline cross-ball distance detection device according to any one of claims 1 to 8, characterized in that: The internal spline cross-ball distance detection device also includes a guide plate (14), the guide plate (14) is connected to the sleeve (1), the guide plate (14) is provided with two guide grooves (141) opposite to and spaced apart from each other, the first measuring ball (6) and the second measuring ball (7) are respectively arranged in the two guide grooves (141), and the first measuring ball (6) and the second measuring ball (7) can respectively move along the length direction of the corresponding guide groove (141).

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