CN214894041U

CN214894041U - Positioning fixture for gear checking

Info

Publication number: CN214894041U
Application number: CN202120211553.7U
Authority: CN
Inventors: 窦小鹏; 吕泮功; 马骋天; 王东飞
Original assignee: Zhengzhou Research Institute of Mechanical Engineering Co Ltd
Current assignee: Zhengzhou Research Institute of Mechanical Engineering Co Ltd
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-11-26
Anticipated expiration: 2031-01-26

Abstract

The positioning fixture for gear checking comprises a checking table, a checking device and a positioning fixture, wherein the positioning fixture comprises a fixture I and a fixture II, the fixture I is fixedly arranged at one end of the checking table, and the fixture II is slidably arranged at the other end of the checking table; the fixture I and the fixture II both comprise clamping upright columns, one opposite sides of the two clamping upright columns are provided with transverse through holes which do not penetrate through the clamping upright columns, screw holes are formed in column walls on two sides of each transverse through hole, and positioning rods which penetrate through the transverse through holes are arranged on the clamping upright columns of the fixture I; the utility model discloses an anchor clamps carry out the check-up work of gear in order to cooperate the calibration equipment, can guarantee that the gear is packed into easily, are applicable to the gear of different thickness and length, have improved the flexibility and the practicality of anchor clamps, have strengthened the service function of anchor clamps, have improved the centre gripping precision of anchor clamps to the gear.

Description

Positioning fixture for gear checking

Technical Field

The utility model relates to a gear check-up technical field, in particular to positioning fixture is used in gear check-up.

Background

Gears are important components and basic parts in modern mechanical transmission, from national defense machinery to civil machinery, from heavy industrial machinery to light industrial machinery, gear transmission is not widely adopted as toothed mechanical parts capable of being meshed with each other, and the gear is extremely widely applied to mechanical transmission and the whole mechanical field. With the rapid development of industrial and agricultural production and scientific technology in China, the need for gears is remarkably increased.

In the field of mechanical manufacturing, for cylindrical workpieces such as gears and the like, an important index is the circular runout degree of a circumferential surface, if the circular runout degree of the circumferential surface exceeds a specified range of design requirements, assembly difficulty can occur in the assembly process, abrasion and noise can be increased in the use process, the service life of parts is shortened, the overall function of equipment is influenced, the working precision is reduced, and even equipment scrap is directly caused, safety accidents occur, so the runout degree of the gear surface is very important. Before detection, the gear needs to be positioned to ensure that the position of the gear cannot deviate during detection, so that the detection precision can be ensured, but when the conventional fixture is used for detecting the jumping of the gear ring, the gear cannot be simultaneously contacted with the end face of the fixture due to uneven stress, so that the jumping of the gear ring is unstable, and the artificial error is large; secondly, the clamp has a complex structure and is inconvenient to manufacture, so that a positioning clamp for gear verification is needed urgently.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, the utility model provides a positioning fixture is used in gear check-up realizes accurate, the quick location to the gear, satisfies the demand that the gear detected.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

the positioning fixture for gear checking comprises a checking table, a checking device and a positioning fixture, wherein the positioning fixture comprises a fixture I and a fixture II, the fixture I is fixedly arranged at one end of the checking table, and the fixture II is slidably arranged at the other end of the checking table; anchor clamps I and II all include the centre gripping stand, two one side that the centre gripping stand is relative is equipped with does not pierce through the horizontal through-hole of centre gripping stand, be equipped with the screw on the column wall of horizontal through-hole both sides, be equipped with on the centre gripping stand of anchor clamps I and pass the locating lever of horizontal through-hole.

As a preferred scheme, a sliding groove is formed in the checking platform, a sliding block is arranged at the bottom of the clamp II, and the clamp II moves in the sliding groove through the sliding block.

Preferably, a support frame is arranged on the outer side of the positioning fixture of the calibration stand, and the calibration device is fixed on the support frame.

Preferably, the positioning rod passes through a shaft hole in the gear to position the gear.

Preferably, a bolt for tightly jacking the gear shaft is arranged in the screw hole.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a fixture is for cooperating the calibration equipment to carry out the check-up work of gear, and the fixture symmetry has set up anchor clamps I and II, wherein, anchor clamps I is fixed to be set up in one end of the calibration bench, and anchor clamps II slide to be set up in the other end of the calibration bench, and this setting can guarantee that the gear is easy to be packed into, is applicable to the gear of different thickness and length, has improved the flexibility and the practicality of anchor clamps, has strengthened the service function of anchor clamps;

because the gear needs to be positioned before detection so as to ensure that the position of the gear can not deviate when detection is carried out, the detection precision can be ensured, therefore, the positioning rod is arranged in the transverse through hole of the clamp I in a penetrating way, and the horizontal arrangement of the positioning rod can ensure the horizontal positioning of the gear shaft entering the clamp, so that the gear shaft can not move in the horizontal direction, and the clamping precision of the clamp to the gear is further improved;

the utility model discloses an anchor clamps are equipped with the screw on the column wall of the horizontal through-hole both sides of centre gripping stand, combine the locating lever to carry out the centre gripping jointly to the gear fixed after squeezing into the bolt, avoid because of the inhomogeneous gear that makes of atress can not simultaneously with anchor clamps end face contact, and then lead to the ring gear unstable of beating, the great condition of human error appears.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is an assembled cross-sectional view of a positioning jig for gear checking and a gear;

FIG. 2 is a schematic view of the positioning fixture;

reference numerals: 1. calibration table, 101, spout, 102, support frame, 2, calibration equipment, 3, positioning fixture, 4, anchor clamps I, 5, anchor clamps II, 501, slider, 6, centre gripping stand 601, horizontal through-hole, 7, screw, 8, locating lever, 9, gear, 901, shaft hole, 902, gear shaft, 10, bolt.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be further explained with reference to the accompanying drawings.

As an embodiment of the present invention, as shown in the accompanying drawings, a positioning fixture for gear calibration is used to perform calibration work of a gear in cooperation with a calibration device, and includes a calibration table 1, a calibration device 2 and a positioning fixture 3, the calibration table 1 is provided with a support frame 102 outside the positioning fixture 3, the calibration device 2 is fixed on the support frame 102 and is located right above an assembled gear so as to perform calibration work;

the positioning fixture 3 comprises a fixture I4 and a fixture II 5, the fixture I4 is fixedly arranged at one end of the calibration table 1, the fixture II 5 is slidably arranged at the other end of the calibration table 1, further, a chute 101 is arranged on the calibration table 1, a slider 501 is arranged at the bottom of the fixture II 5, the fixture II 5 moves in the chute 101 through the slider 501, the arrangement can ensure that the gears are easy to assemble, the positioning fixture is suitable for gears with different thicknesses and lengths, the flexibility and the practicability of the fixture are improved, and the use function of the fixture is enhanced;

the fixture I4 and the fixture II 5 respectively comprise a clamping upright post 6, a transverse through hole 601 which does not penetrate through the clamping upright post 6 is formed in one side, opposite to the two clamping upright posts 6, of each clamping upright post, screw holes 7 are formed in the column walls on two sides of each transverse through hole 601, each transverse through hole 601 is a fixing position of the gear shaft 902, and the gear shaft 902 penetrates through the transverse through holes 601 and is tightly jacked through bolts 10;

because need fix a position the gear before detecting to when guaranteeing to detect, the skew can not take place for the position of gear, just can guarantee to detect the precision, consequently, be equipped with on the centre gripping stand 6 of anchor clamps I4 and pass the locating lever 8 of horizontal through-hole 601, the locating lever 8 passes shaft hole 901 on the gear 9 and fixes a position gear 9, and this locating lever 8 level sets up, can guarantee the horizontal location of the gear shaft 902 that gets into anchor clamps, makes gear shaft 902 can not be in the horizontal direction drunkenness, further improves the centre gripping precision of anchor clamps to the gear, avoids making the gear can not be simultaneously with anchor clamps end face contact because of the atress is inhomogeneous, and then leads to the ring gear to beat unstably, the great condition of human error appears.

The utility model discloses a use of anchor clamps is as follows:

assembling a gear and a clamp, moving a sliding block 501 at the bottom of a clamp II 5 to drive the clamp II 5 to move in a sliding groove 101 until the distance between a clamp I4 and the clamp II 5 can meet the assembling requirement of the gear, then installing a gear shaft 902 and a positioning rod 8 to enable the positioning rod 8 to penetrate through a shaft hole in the gear shaft 902 and push the gear against the small end of the clamp I4, moving the sliding block 502 to enable a transverse through hole 602 in the clamp II 5 to be clamped with the gear shaft on the other side, then installing a bolt 10 in a screw hole 7, and further tightly jacking and fixing the gear shaft 902 to achieve a clamping effect; and (5) carrying out next verification work by using a verification device above the gear.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The positioning fixture for gear checking is characterized by comprising a checking platform (1), a checking device (2) and a positioning fixture (3), wherein the positioning fixture (3) comprises a fixture I (4) and a fixture II (5), the fixture I (4) is fixedly arranged at one end of the checking platform (1), and the fixture II (5) is slidably arranged at the other end of the checking platform (1); anchor clamps I (4) and II (5) of anchor clamps all include centre gripping stand (6), two one side that centre gripping stand (6) is relative is equipped with does not pierce through horizontal through-hole (601) of centre gripping stand (6), be equipped with screw (7) on the post wall of horizontal through-hole (601) both sides, be equipped with on centre gripping stand (6) of anchor clamps I (4) and pass locating lever (8) of horizontal through-hole (601).

2. The positioning fixture for gear verification according to claim 1, wherein a sliding groove (101) is formed in the verification table (1), a sliding block (501) is arranged at the bottom of the fixture II (5), and the fixture II (5) moves in the sliding groove (101) through the sliding block (501).

3. The positioning fixture for gear verification according to claim 1, wherein the verification table (1) is provided with a support frame (102) on the outer side of the positioning fixture (3), and the verification device (2) is fixed on the support frame (102).

4. The positioning jig for gear verification according to claim 1, wherein the positioning rod (8) passes through a shaft hole (901) in the gear (9) to position the gear (9).

5. The positioning jig for gear verification according to claim 1, wherein a bolt (10) for tightening the gear shaft (902) is provided in the screw hole (7).