CN108303060A - A kind of spline stick distance measurement auxiliary block and its fixing bracket - Google Patents

Abstract

The invention discloses a kind of spline stick distance measurement auxiliary blocks, the measurement auxiliary block is semicylinder, and semicylinder has arcwall face, the arc groove for fixing length bar is offered on arcwall face, arcwall face is separated into two cambered surfaces, and symmetrical axial symmetry of two cambered surfaces about semicylinder by arc groove.Accordingly, the invention also discloses a kind of fixing brackets for fixing above-mentioned measurement auxiliary block, the fixing bracket includes the first fixed plate and the second fixed plate being oppositely arranged, it is connected by column between first fixed plate and the second fixed plate, auxiliary block mounting hole there are one being opened up in first fixed plate and the second fixed plate, and the position of the auxiliary block mounting hole in the first fixed plate is corresponding with the position of auxiliary block mounting hole in the second fixed plate.The measurement auxiliary block and its fixing bracket of the present invention, it is simple in structure, it is of low cost, the length bar in spline stick distance measurement can be fixed, include almost all stick spacing specified in national standard.

Description

An auxiliary block for measuring the distance between spline rods and its fixing bracket

technical field

The invention relates to the field of auxiliary jigs for measuring the distance between spline rods, in particular to an auxiliary block for measuring the distance between spline rods and a fixing bracket thereof.

Background technique

The involute spline refers to the spline in which the key teeth are on the cylindrical (or conical) surface and the tooth shape is involute. Compared with rectangular splines, involute splines have more teeth, thicker tooth ends and roots, stronger bearing capacity, easy self-centering, and higher installation accuracy. Excellent rigidity, easy to adopt chipless processing methods such as cold rubbing, cold striking, cold extrusion, etc., high production efficiency, high precision, and saving materials, etc., so it has been widely used.

Involute spline gauge is the main production line standard gauge for comprehensive inspection of involute spline. In recent years, with the increase in the production of involute spline gauges, the number of cylindrical spur involute spline gauges is on the rise. Cylindrical spur tooth involute spline gauges mainly reflect parameters such as tooth space width indirectly through calibration rod spacing, diameter and other parameters. According to GB/T5106-2012 Cylindrical Involute Spline Gauge Standard, measuring rod spacing needs to be realized by measuring rod. When measuring the rod spacing, it is necessary to fix the measuring rod. At present, although there are jigs for fixing spline measuring rods in China, they are basically suitable for even-numbered splines, and there are some limitations for odd-numbered splines and small-module splines. Moreover, most of the current jigs have complex structures and are relatively expensive to manufacture, and some of them must be produced in sections due to the influence of the measuring range.

Contents of the invention

In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a simple structure, low cost, for small modulus splines, odd-tooth splines measuring rod spacing value applicable to the fixed jig.

In order to achieve the above object, the technical scheme adopted in the present invention is:

The first aspect of the present invention provides an auxiliary block for measuring the distance between splined rods. The auxiliary block for measuring is an arcuate cylinder with an arcuate surface. The arc-shaped groove of the rod, the arc-shaped groove divides the arc-shaped surface into two arc-shaped surfaces, and the two arc-shaped surfaces are symmetrical about the symmetry axis of the arc-shaped cylinder.

Preferably, the measurement auxiliary block is a semi-cylindrical body.

Preferably, the arc groove has a depth of 0.2mm or 0.5mm.

Preferably, the radius of the half cylinder is 2.5mm or 5mm, and the length of the half cylinder is 20mm-50mm.

The second aspect of the present invention provides a fixing bracket for fixing the above-mentioned spline rod spacing measurement auxiliary block, including a first fixing plate and a second fixing plate oppositely arranged, the first fixing plate and the second fixing plate The fixed plates are connected by uprights, and an auxiliary block fixing hole for fixing the measuring auxiliary block is provided on the first fixed plate and the second fixed plate, and the auxiliary block on the first fixed plate is fixed The positions of the holes correspond to the positions of the auxiliary block fixing holes on the second fixing plate.

Preferably, both the first fixing plate and the second fixing plate are provided with at least one column fixing hole for fixing the column, and the position of the column fixing hole on the first fixing plate is the same as that of the second fixing plate. The positions of the column fixing holes correspond to each other.

Preferably, the fixing hole of the auxiliary block is provided with a V-shaped notch.

Preferably, the fixing hole of the auxiliary block has a width of 12 mm and a length of 20 mm.

Preferably, the bottom of the column is provided with a fixing block integrally formed therewith, and the fixing block is arranged between the first fixing plate and the second fixing plate.

Preferably, two threaded holes for threaded rods are opened on the fixed block, and the two threaded rods pass through the two threaded holes to realize the fixing of the fixed bracket.

Preferably, the length of the column is 75mm.

The present invention has following beneficial effects:

1. The measurement auxiliary block provided by the present invention has a simple structure and low cost, and can fix the measuring rod in the measurement of the distance between the spline rods, especially for the small modulus splines and odd-numbered splines, which has considerable advantages;

2. Since the measurement auxiliary block provided by the present invention adopts a fixed measuring rod on each side, it also has advantages for odd-numbered tooth splines and even-numbered tooth splines;

3. The fixing bracket provided by the present invention has a simple structure and low cost, and can assist in fixing the measuring rod in the measurement of the distance between the large-size spline rods;

4. Using the measurement auxiliary block and its fixed bracket provided by the present invention, the measurement repeatability is good, the operation is convenient, and the parameterized automatic measurement can be realized on the ultra-high-precision three-coordinate, which greatly improves the measurement efficiency and accuracy of the spline rod spacing .

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural diagram of the auxiliary block for measuring the distance between splined rods provided in Embodiment 1 of the present invention;

Fig. 2 is a schematic structural view of the fixing bracket for fixing the auxiliary block for measuring the distance between splined rods provided by Embodiment 2 of the present invention;

3 is a schematic structural view of the first fixing plate and the second fixing plate provided by Embodiment 2 of the present invention;

FIG. 4 is a schematic structural view of a column provided in Embodiment 2 of the present invention;

In the figure: 1-measurement auxiliary block, 11-plane, 12-arc surface, 121-arc groove, 2-first fixing plate, 3-second fixing plate, 4-column, 41-fixing block, 411- Threaded hole, 5-auxiliary block fixing hole, 51-V-shaped notch, 6-column fixing hole, 7-screw rod, 8-spline, 9-measuring rod.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and are only for It is convenient to describe the present invention and simplify the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the present invention.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, means, product or equipment comprising a series of steps or elements need not be limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

Example 1

As shown in Fig. 1, the present embodiment provides a kind of auxiliary block for measuring the distance between splined rods. The auxiliary block 1 is an arc cylinder, preferably a semi-cylindrical body. The semi-cylindrical body has two planes 11 and an arcuate surface 12. , the arc-shaped surface 12 is provided with an arc-shaped groove 121 for fixing the measuring rod, and the arc-shaped groove 121 divides the arc-shaped surface 12 into two arc-shaped surfaces, and the two arc-shaped surfaces are symmetrical about the axis of symmetry of the semi-cylindrical body .

When in use, the measuring rod is placed between the tooth groove of the spline and the arc-shaped groove 121 , and the measuring rod is clamped and fixed through the arc-shaped groove 121 . Preferably, the arc-shaped groove 121 is designed to have a depth of 0.5 mm, or 0.2 mm in depth, and is specially used for fixing small measuring rods with a diameter of about 0.6 mm.

Preferably, the radius of the semi-cylindrical body is designed to be 2.5mm or 5mm, a semi-cylindrical body with a radius of 5mm can be used for fixing measuring rods with a minimum diameter of about 10mm, and a semi-cylindrical body with a radius of 2.5mm can be used for the smallest diameter. For the fixation of the measuring stick of about 6mm. Preferably, the length of the semi-cylindrical body is designed to be 20mm to 50mm. In specific use, the longer semi-cylindrical body can be fixed with a rubber band, and the shorter semi-cylindrical body can be fixed with a gauge block.

Example 2

As shown in FIGS. 2-4 , this embodiment provides a fixing bracket for fixing the auxiliary block for measuring the distance between spline rods, which is composed of a first fixing plate 2 , a second fixing plate 3 and a column 4 . Preferably, the first fixing plate 2 is arranged above the second fixing plate 3 . One end of the first fixed plate 2 and the second fixed plate 3 is provided with an auxiliary block fixing hole 5 for fixing the auxiliary block, and the position of the auxiliary block fixing hole 5 on the first fixed plate 2 is the same as that of the second fixed plate 3 The position of the auxiliary block fixing hole 5 on the corresponding.

When in use, first place the spline 8 between the first fixed plate 2 and the second fixed plate 3, then put the measuring auxiliary block 1 into the auxiliary block fixing hole 5 on the first fixed plate 2, then place the The measuring rod 9 is embedded between the tooth groove of the spline 8 and the measuring auxiliary block 1 , and the measuring rod 9 is fixed by the measuring auxiliary block 1 . When it is necessary to measure the rod spacing of the large-size spline 8, two fixing brackets are required to respectively fix a measuring rod 9. Because it is unilaterally to fix measuring rod 9 respectively, it has advantages equally to odd-numbered tooth splines and even-numbered tooth splines.

Optionally, a V-shaped notch 51 is provided on one side of the fixing hole of the auxiliary measurement block 1 for directly fixing the measuring rod 9 with a larger size. Preferably, the auxiliary block fixing hole 5 has a width of 12 mm and a length of 20 mm. After repeated experiments, this size can be used for fixing most of the measuring rods 9 .

Further, the other ends of the first fixing plate 2 and the second fixing plate 3 are provided with a column fixing hole 6 for fixing the column 4, and the position of the column fixing hole 6 on the first fixing plate 2 is the same as that of the second fixing plate. The positions of the column fixing holes 6 on the board 3 are corresponding. The column 4 passes through the column fixing hole 6 on the first fixing plate 2 and is fixed in the column fixing hole 6 . The bottom of the column 4 is provided with a fixing block 41 integrally formed therewith, and the fixing block 41 is arranged between the first fixing plate 2 and the second fixing plate 3 . Preferably, the length of the column 4 is designed to be 75 mm, wherein the height of the fixing block 41 is 20 mm, which basically includes all the dimensions of the splines 8 . The column fixing hole 6 can be used for the measurement of the distance between the large-size splines 8 rods.

Optionally, a column fixing hole 6 is also provided on the first fixing plate 2 and the second fixing plate 3, and the column fixing hole 6 is arranged between the auxiliary block fixing hole 5 and the column fixing hole 6, and the first fixing plate The position of the column fixing hole 6 on the 2 is corresponding to the position of the column fixing hole 6 on the second fixing plate 3 . The column fixing hole 6 can be used for the measurement of the distance between the small-sized splines 8 rods.

Preferably, the fixing block 41 is provided with two threaded holes 411 for the screw rods 7 to pass through, and the two screw rods 7 pass through the two threaded holes 411 to realize the fixing of the fixing bracket. After repeated experiments and verifications, the threaded hole 411 is taken as the standard threaded hole 411 of M10, and two are provided for balancing and fixing the bracket. When two fixing brackets are used to cooperate with the measurement of the distance between the rods of the large-sized spline 8, the spline 8 can be clamped and fixed by the screw rod 7 passing through the two fixing brackets.

Example 3

This embodiment provides a method for measuring the distance between spline rods, which is suitable for splines of a smaller size, which can be as small as an inner diameter of about 10 mm. Specifically, the measurement method includes the following steps:

a. Select the measuring rod size according to the drawing requirements;

b. Put the measuring rod and spline on the V-shaped iron;

c. Select a gauge block of appropriate size to fix the measuring auxiliary block;

d. Use ultra-high-precision three-dimensional coordinates to measure the distance between the measuring rods, that is, the rod spacing.

Example 4

This embodiment provides a method for measuring the distance between spline rods, which is suitable for splines of smaller size, which can be as small as an inner diameter of about 6 mm. Specifically, the measurement method includes the following steps:

a. Select the measuring rod size according to the drawing requirements;

b. Put the measuring rod and spline on the V-shaped iron;

c. Choose a rubber band of appropriate size to fix the measuring auxiliary block;

d. Use ultra-high-precision three-dimensional coordinates to measure the distance between the measuring rods, that is, the rod spacing.

Example 5

This embodiment provides a method for measuring the distance between spline rods, which is suitable for splines with a larger size, which can be as large as the inner diameter of 17 mm or more. Specifically, the measurement method includes the following steps:

a. Select the measuring rod size according to the drawing requirements;

b. Put the measuring rod and spline on the V-shaped iron;

c. Fix the measurement auxiliary block with a fixed bracket;

d. Use ultra-high-precision three-dimensional coordinates to measure the distance between the measuring rods, that is, the rod spacing.

Compared with prior art, the present invention has following advantage:

1. The measurement auxiliary block provided by the present invention has a simple structure and low cost, and can fix the measuring rod in the measurement of the distance between the spline rods, especially for the small modulus splines and odd-numbered splines, which has considerable advantages;

2. Since the measurement auxiliary block provided by the present invention adopts a fixed measuring rod on each side, it also has advantages for odd-numbered tooth splines and even-numbered tooth splines;

3. The fixing bracket provided by the present invention has a simple structure and low cost, and can assist in fixing the measuring rod in the measurement of the distance between the large-size spline rods;

4. The measurement auxiliary block and its fixed bracket provided by the present invention have good measurement repeatability and convenient operation, and can realize parameterized automatic measurement on the ultra-high-precision three-coordinate, which greatly improves the measurement efficiency and accuracy of the spline rod spacing.

It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and not to limit the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. a kind of spline rod distance measurement auxiliary block, it is characterized in that, described measurement auxiliary block (1) is arc surface cylinder, and described arc surface cylinder has arc surface (12), and described arc surface (12 ) is provided with an arc-shaped groove (121) for fixing the measuring rod (9), and the arc-shaped groove (121) separates the arc-shaped surface (12) into two arc-shaped surfaces, and the two arc-shaped surfaces It is symmetrical about the axis of symmetry of the arcuate cylinder. 2. The auxiliary block for measuring the distance between splined rods according to claim 1, characterized in that, the auxiliary block for measuring (1) is a semi-cylindrical body. 3. The auxiliary block for measuring the distance between splined rods according to claim 1, characterized in that, the depth of the arc-shaped groove (121) is 0.2mm or 0.5mm. 4 . The auxiliary block for measuring the distance between splined rods according to claim 2 , wherein the radius of the semi-cylindrical body is 2.5 mm or 5 mm, and the length of the semi-cylindrical body is 20 mm-50 mm. 5. A fixed bracket, used for fixing the auxiliary block for measuring the distance between splined rods according to any one of claims 1-4, characterized in that, it comprises a first fixed plate (2) and a second fixed plate (2) set oppositely plate (3), the first fixed plate (2) and the second fixed plate (3) are connected by a column (4), Both the first fixed plate (2) and the second fixed plate (3) are provided with an auxiliary block fixing hole (5) for fixing the auxiliary measuring block (1), and the first fixed plate ( 2) The positions of the auxiliary block fixing holes (5) on the second fixing plate (3) correspond to the positions of the auxiliary block fixing holes (5). 6. The fixing bracket according to claim 5, characterized in that, at least one column for fixing the column (4) is provided on the first fixing plate (2) and the second fixing plate (3) fixing holes (6), and the positions of the column fixing holes (6) on the first fixing plate (2) correspond to the positions of the column fixing holes (6) on the second fixing plate (3). 7. The fixing bracket according to claim 5, characterized in that, the auxiliary block fixing hole (5) is provided with a V-shaped notch (51). 8. The fixing bracket according to claim 5, characterized in that, the auxiliary block fixing hole (5) has a width of 12 mm and a length of 20 mm. 9. The fixed bracket according to claim 5, characterized in that, the bottom of the column (4) is provided with a fixed block (41) integrally formed with it, and the fixed block (41) is arranged on the first fixed plate ( 2) Between the second fixed plate (3). 10. The fixing bracket according to claim 9, characterized in that, the fixing block (41) is provided with two threaded holes (411) for the screw rods (7) to pass through, and the two screw rods (7) Through the two threaded holes (411) to achieve the fixation of the fixed bracket.