CN210242643U

CN210242643U - Detection device for ball head positioning piece of driven gear

Info

Publication number: CN210242643U
Application number: CN201921394028.2U
Authority: CN
Inventors: Huishun Hu; 胡慧顺
Original assignee: Jiangxi Jmcg Axle Gear Co ltd
Current assignee: Jiangxi Jmcg Axle Gear Co ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-04-03
Anticipated expiration: 2029-08-26

Abstract

The utility model discloses a detection device for a ball head positioning piece of a passive gear, which comprises a placing table and a ball head positioning piece, wherein the placing table is provided with a positioning hole, a mounting frame is placed above the placing table, a gauge stand is inserted above the mounting frame and is fixedly connected with the mounting frame, the gauge stand is also sleeved with a thin-wall clamping sleeve, the thin-wall clamping sleeve is fixedly connected with a dial indicator, the bottom of the dial indicator is provided with a gauge needle interlocking piece, the gauge needle interlocking piece is positioned inside the gauge stand, the mounting frame is provided with a clamping edge, the mounting frame is also provided with a floating measuring bar, the floating measuring bar is provided with a convex edge, the bottom of the floating measuring bar is provided with a guide port, the extension line of the cross section of the guide port is an included angle,the diameter of the ball head is larger than the upper end caliber of the guide port and smaller than the lower end caliber of the guide port, the ball head is matched with a tooth groove of the driven gear, and the pressure angle of the tooth groove is theta₁Where θ = θ₁. The utility model discloses bulb setting element measurement accuracy can be improved.

Description

Detection device for ball head positioning piece of driven gear

Technical Field

The utility model relates to a measuring device technical field specifically is a be used for driven gear bulb setting element detection device.

Background

One side of the driven gear is provided with a tooth socket, the other side of the driven gear is a plane and is provided with a driven gear inner hole, the driven gear is subjected to cutting processing on a lathe when the plane and the driven gear inner hole are processed, a special detection device is adopted to enable a ball head of a clamp to be arranged in the tooth socket of the driven gear and enable the ball head to support the driven gear, the clamp is also circular, 6 ball head positioning pieces are uniformly distributed along the circumference, and the driven gear is positioned and fixed. In order to ensure that the flatness of the plane after cutting and the depth of the inner hole of the driven gear are within the tolerance range meeting the technical requirements, the spherical bearing positioning of the ball head positioning piece needs to be at the same plane height, namely the supporting heights of 6 ball head positioning pieces need to be consistent, so that the problem that unqualified products are machined due to the fact that the machined surface of the driven gear and the machined inner hole are inclined is avoided.

Need detect ball head setting element when using, the scheme that prior art generally adopted is: and measuring the height H from the bottom of the ball head to the bottom of the ball head base by using a flat height gauge, measuring and reading the height H, measuring the diameter D of the ball head, and calculating to obtain the value of the supporting height L of the ball head positioning piece, namely L = H + D.

The prior art measurement has the following disadvantages:

1. the flat height gauge is adopted for measurement, certain errors are easy to exist through manual measurement and reading, and the L value obtained after calculation is inaccurate.

2. The design of the clamp is in positioning contact with the spherical surface of the ball head positioning piece and the tooth socket, the inner walls on two sides of the tooth socket have certain inclination, when the diameter of the ball head is slightly larger, the ball head is likely to be in contact with two side walls and cannot be in contact with the bottom of the tooth socket, a certain distance exists between the bottom of the tooth socket and the top of the ball head at the moment, the diameters of the ball head in a certain range are different, the distance between the bottom of the tooth socket and the top of the ball head is changed accordingly, even if the data obtained by adopting the calculation mode of the prior art scheme is the same, the situation that the passive gear is unqualified can be caused due to the fact that the distance between the bottom of the tooth socket and the part of the top of the ball head is different, therefore, in order to reduce the existence of the error.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of existence among the prior art, providing a be used for driven gear bulb setting element detection device, can improve bulb setting element measurement accuracy.

In order to realize the purpose, the utility model discloses a technical scheme be:

a detection device for a ball head positioning piece of a passive gear is characterized by comprising a placing table and a ball head positioning piece, wherein a positioning hole is formed in the placing table, a mounting frame is placed above the placing table, a gauge stand is inserted above the mounting frame, the gauge stand is fixedly connected with the mounting frame in a threaded connection mode, a thin-wall clamping sleeve is further sleeved inside the gauge stand, the thin-wall clamping sleeve is fixedly connected with a dial indicator through the matching of a set screw, a gauge needle linkage piece is arranged at the bottom of the dial indicator, the gauge needle linkage piece is positioned inside the gauge stand, a clamping edge is arranged on the inner wall of the mounting frame, a floating measuring rod is further arranged inside the mounting frame, a convex edge is arranged on the floating measuring rod and positioned between the bottom of the gauge stand and the clamping edge, the floating measuring rod is movably connected with the mounting frame, a guide port is formed in the bottom of the floating measuring rod, the guiding opening is in a round table shape, the cross section extension line of the guiding opening is an included angle theta, the ball head positioning piece comprises a ball head, a ball head base and a limiting rod, the ball head base and the limiting rod are integrally formed, the diameter of the ball head is larger than the upper end caliber of the guiding opening and smaller than the lower end caliber of the guiding opening, the ball head is matched with a tooth groove of a driven gear, and the pressure angle of the tooth groove is theta_1,Where θ = θ₁。

Preferably, the positioning hole and the limiting rod are respectively cylindrical.

Preferably, a spring is connected between the convex edge and the bottom of the watch seat.

Preferably, the bottom of the mounting frame is also provided with a ball head base avoiding groove.

Preferably, the mounting bracket is cylindrical in shape.

The utility model discloses possess beneficial effect: the utility model discloses can improve the measurement accuracy of bulb setting element, can avoid generally requiring the bulb diameter on every strong point to guarantee the same when selecting simultaneously, have the problem of certain limitation in the selection of giving the bulb.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the ball head positioning member of the present invention;

FIG. 3 is a longitudinal sectional view of the floating measuring rod of the present invention;

FIG. 4 is a schematic view of the mounting structure of the fixture and the driven gear of the present invention;

FIG. 5 is a schematic view of the structure of the driven gear of the present invention;

in the figure: 1. the positioning device comprises a placing table, 2, a positioning hole, 3, a ball head positioning piece, 4, a mounting frame, 5, a clamping edge, 6, a gauge stand, 7, a thin-wall clamping sleeve, 8, a dial indicator, 9, a set screw, 10, a gauge needle linkage piece, 11, a spring, 12, a convex edge, 13, a floating measuring rod, 14, a guide port, 15 and a ball head base avoiding groove, 16, a ball head, 17, a ball head base, 18, a limiting rod, 19, a driven gear, 20, a driven gear inner hole, 21 and a tooth groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The detection device for the passive gear ball head positioning piece is characterized by comprising a placing table 1 and a ball head positioning piece 3, wherein the placing table 1 is provided with a positioning hole 2, a mounting frame 4 is placed above the placing table 1, a gauge stand 6 is inserted above the mounting frame 4, the gauge stand 6 is fixedly connected with the mounting frame 4 in a threaded connection mode, a thin-wall clamping sleeve 7 is further sleeved inside the gauge stand 6, a dial gauge 8 is fixedly connected with the thin-wall clamping sleeve 7 through the matching of a set screw 9, a gauge needle linkage piece 10 is arranged at the bottom of the dial gauge 8, the gauge needle linkage piece 10 is positioned inside the gauge stand 6, a clamping edge 5 is arranged on the inner wall of the mounting frame 4, a floating measuring rod 13 is further arranged inside the mounting frame 4, a convex edge 12 is arranged on the floating measuring rod 13, the convex edge 12 is positioned between the bottom of the gauge stand 6 and the clamping edge 5, the floating measuring rod 13 is movably connected with the mounting frame 4, a guide port 14 is arranged at the bottom of the floating measuring rod 13, the guide port 14 is in a circular truncated cone shape, and the cross section extension line of the guide port 14Is an contained angle theta, bulb setting element 3 includes bulb 16, bulb base 17 and gag lever post 18, bulb 16, bulb base 17 and gag lever post 18 integrated into one piece, the diameter of bulb 16 is greater than the upper end bore of uide hole 14 to be less than the lower extreme bore of uide hole 14,

bulb

16 and 19 tooth's socket 21 phase-match of driven gear, the pressure angle of tooth's socket 21 is theta_1,Where θ = θ₁。

Preferably, the positioning hole 2 and the limiting rod 18 are cylindrical. A spring 11 is connected between the convex edge 12 and the bottom of the watch seat 6. The bottom of the mounting rack 4 is also provided with a ball head base avoiding groove 15. The mounting frame 4 is cylindrical in shape.

The working principle of the utility model, the measuring device of the utility model is installed by connecting the spring 11 at the bottom of the gauge stand 6, connecting the other end of the spring 11 on the convex edge 12, connecting the gauge stand 6 with the floating measuring bar 13 by the spring, then sleeving the gauge stand 6 and the floating measuring bar 13 into the mounting rack 4, respectively, making the gauge stand 6 and the floating measuring bar 13 partially clearance-fit with the inner wall of the mounting rack 4, making the convex edge 12 move up and down between the bottom of the gauge stand 6 and the clamping edge 5, then sleeving the thin-wall clamping sleeve 7 on the inner wall of the inlet end (shown in figure 1) of the gauge stand 6, inserting the bottom end of the dial gauge 8 into the thin-wall clamping sleeve 7 and locking and fixing the dial gauge 8 through the set screw 9, making the dial gauge linkage 10 contact with the upper end of the floating measuring bar 13, when the convex edge 12 contacts with the clamping edge 5, the dial gauge linkage 10 contacts with the upper end of the floating measuring bar 13, the spring 11 is in a stretched state, and the pointer of the dial indicator 8 points to the scale line 0.

During detection, a limiting rod 18 to be detected is inserted into the positioning hole 2 to form a limiting effect, the mounting frame 4 is taken up to cover the ball head positioning piece 3 to be detected according to requirements, the ball head 16 can abut against the floating measuring rod 13 at the moment, the floating measuring rod 13 and the pointer linkage piece 10 move upwards together to drive the dial indicator 8 to rotate, when the pointer of the dial indicator 8 stops moving, measured values are recorded, other ball head positioning pieces 3 to be detected are measured by the method and recorded respectively, the measured values are compared to see whether to fall into an allowable tolerance range, and if the measured values fall into the allowable tolerance range, the ball head positioning pieces of the set are positioned3, otherwise, the ball head positioning piece 3 needs to be replaced for measurement again, the ball head positioning piece 3 can not be used until the ball head positioning piece 3 is qualified, and the cross section extension line of the guide port 14 forms an included angle theta and a pressure angle theta of the tooth socket 21₁(indicate that ball head setting element 3 is tangent with the both sides inner wall of tooth's socket 21, the circumcision angle of this ball head setting element 3 that forms through two tangency points) equals, and the setting is the service environment the same with driven gear ball head setting element in order to guarantee detection device's detection environment like this, can effectively avoid the diameter of bulb 16 in the certain limit different, and the distance between tooth's socket 21 bottom and the bulb 16 top also changes thereupon to lead to measuring inaccurate, the utility model discloses as long as ensure that the bottom of ball head setting element 3 is the same to the vertical distance of bulb 16 strong point, consequently bulb 16 can be selected at certain within range, and need not guarantee the same, make the selection face of bulb 16 increase.

The above-described embodiments are illustrative of the present invention and not restrictive, it being understood that various changes, modifications, substitutions and alterations may be made herein without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. The detection device for the passive gear ball head positioning piece is characterized by comprising a placing table (1) and a ball head positioning piece (3), wherein a positioning hole (2) is formed in the placing table (1), a mounting frame (4) is placed above the placing table (1), a gauge stand (6) is inserted above the mounting frame (4), the gauge stand (6) is fixedly connected with the mounting frame (4) in a threaded connection mode, a thin-wall clamping sleeve (7) is further sleeved inside the gauge stand (6), a dial indicator (8) is fixedly connected with the thin-wall clamping sleeve (7) through the matching of a set screw (9), a gauge needle linkage piece (10) is arranged at the bottom of the dial indicator (8), the gauge needle linkage piece (10) is located inside the gauge stand (6), a clamping edge (5) is arranged on the inner wall of the mounting frame (4), and a floating measuring rod (13) is further arranged inside the mounting frame (4), a convex edge (13) is arranged on the floating measuring rod (13)12) The utility model discloses a ball head positioning element, protruding edge (12) are located gauge stand (6) bottom and joint along between (5), make measuring staff (13) and mounting bracket (4) of floating form swing joint, the bottom of measuring staff (13) of floating is equipped with direction mouth (14), direction mouth (14) are round platform shape, and the cross section extension line of direction mouth (14) is an contained angle theta, ball head positioning element (3) include bulb (16), bulb base (17) and gag lever post (18), bulb (16), bulb base (17) and gag lever post (18) integrated into one piece, the diameter of bulb (16) is greater than the upper end bore of direction mouth (14) to be less than the lower extreme bore of direction mouth (14), bulb (16) and tooth's socket (21) phase-match of driven gear (19), the pressure angle of tooth's socket (21) is theta_1,Where θ = θ₁。

2. The detection device for the ball head positioning piece of the driven gear according to claim 1, wherein the positioning hole (2) and the limiting rod (18) are respectively cylindrical.

3. The detection device for the ball stud of the driven gear according to claim 1, wherein a spring (11) is connected between the convex edge (12) and the bottom of the watch seat (6).

4. The detection device for the ball head positioning piece of the driven gear according to claim 1, wherein a ball head base avoiding groove (15) is further formed at the bottom of the mounting frame (4).

5. The detection device for the ball stud of the driven gear according to claim 1, wherein the mounting frame (4) is cylindrical in shape.