Detection tool for detecting distance between internal spline rods

Abstract

The utility model relates to internal spline detection, and discloses a gauge for measuring the distance between internal spline rods, which comprises an upper measuring block, a lower measuring block and a mounting part. When the distance between the rods of the internal spline is measured, the two rods are placed on corresponding tooth positions according to the fact that the tooth number of the internal spline is an even number or an odd number; placing the gauge for measuring the distance between the internal spline rods between the two rods, adjusting the distance between the first contact surface and the second contact surface in the first direction, enabling the first contact surface and the second contact surface to abut against the two rods respectively, completing the adjustment, and fixing the upper measuring block and the lower measuring block; and taking out the gauge for measuring the distance between the internal spline rods, and measuring the distance between the first contact surface and the second contact surface. The device has the advantages that measurement is simple, convenient and efficient, and the position of the actual rod distance can be rapidly positioned through lapping-in movement of the upper measuring block and the lower measuring block; 2, durability and good cost performance are realized; and 3, the applicability is good, and the simple gauge for measuring the distance between the internal spline rods is particularly suitable for a large-batch production field.

Description

Technical Field

[0001] The utility model relates to internal spline detection, in particular to a detection tool for measuring the spacing between internal spline rods. Background Art

[0002] With the rapid development of the machinery industry, particularly the automotive industry, the precision requirements for involute spline components are becoming increasingly stringent. Therefore, measuring the span of external splines and the distance between internal splines is crucial. The distance between internal splines is also a crucial parameter for verifying the conformity of internal spline dimensions. Measuring the distance between internal splines is typically done with a length gauge, but these instruments are not suitable for on-site production environments. Utility Model Content

[0003] The present application provides a gauge for measuring the spacing between internal spline rods, which can solve the problems raised in the background technology.

[0004] In this application, a gauge for measuring the spacing between internal spline rods is provided, comprising:

[0005] The upper measuring block has a first lower side surface that is inclined in the first direction; of the two end surfaces in the first direction, the end surface corresponding to the lower edge of the lower side surface is a first contact surface for contacting the rod and is flat;

[0006] The lower measuring block has a second upper side surface that is inclined in the first direction; of the two end surfaces in the first direction, the end surface corresponding to the upper edge of the lower side surface is a second contact surface for contacting the rod and is flat;

[0007] The mounting portion, the upper measuring block and the lower measuring block are both fixedly connected to the mounting portion, and the first lower side surface is affixed to the second upper side surface; at least one of the upper measuring block and the lower measuring block can adjust the fixed position on the mounting portion, thereby adjusting the distance between the first contact surface and the second contact surface in the first direction.

[0008] Furthermore, one of the upper measuring block and the lower measuring block that can adjust its fixed position on the mounting portion is threadedly connected with a plurality of screws; and the mounting portion is provided with a waist-shaped through groove for the screw rod portion to pass through.

[0009] Furthermore, the mounting portion includes: two fixing blocks.

[0010] Furthermore, both the upper measuring block and the lower measuring block can be adjusted to a fixed position on the mounting portion.

[0011] Furthermore, the upper measuring block and the lower measuring block have the same shape and size.

[0012] Furthermore, the flatness of the first lower side surface and the second upper side surface is within 0.002.

[0013] In summary, in the present application, a gauge for measuring the spacing between internal spline rods comprises an upper measuring block, a lower measuring block and a mounting portion. When measuring the spacing between the internal spline rods, two rods are placed on the corresponding tooth positions according to whether the number of teeth of the internal spline is even or odd; the gauge for measuring the spacing between the internal spline rods is placed between the two rods, and the spacing between the first contact surface and the second contact surface in the first direction is adjusted so that the first contact surface and the second contact surface are respectively against the two rods. After the adjustment is completed, the upper measuring block and the lower measuring block are fixed; the gauge for measuring the spacing between the internal spline rods is taken out, and the spacing between the first contact surface and the second contact surface is measured. Beneficial effects: 1. Simple and efficient measurement, through the grinding and movement of the upper and lower measuring blocks, the position of the actual rod spacing can be quickly located; 2. Durable and cost-effective; 3. Good applicability. The simple gauge for measuring the spacing between internal spline rods is particularly suitable for large-scale production sites. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0015] Figure 1 A schematic diagram of this application;

[0016] Figure 2 for Figure 1 Cross-sectional view along AA.

[0017] In the figure,

[0018] 1. Upper measuring block; 1a. First lower side surface; 1b. First contact surface;

[0019] 2. Lower measuring block; 2a. Second upper side surface; 2b. Second contact surface;

[0020] 3. Mounting part; 3a. Fixing block; 3b. Waist-shaped passage;

[0021] 4. Screw; 4a. Connecting sleeve. DETAILED DESCRIPTION

[0022] The following is further explained in conjunction with the accompanying drawings. Unless otherwise defined, the technical terms or scientific terms used in this disclosure should have the usual meanings understood by people with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0023] See also Figure 1 and Figure 2 A measuring fixture for measuring the spacing between internal spline rods includes an upper measuring block 1, a lower measuring block 2 and a mounting portion 3.

[0024] The first lower side surface 1a of the upper measuring block 1 is inclined in a first direction. If the first direction is set as the left-right direction, the left and right edges of the first lower side surface 1a are arranged one above the other. Of the two end surfaces of the upper measuring block 1 in the first direction (i.e., the left and right end surfaces), the end surface corresponding to the lower edge of the lower side surface is a flat first contact surface 1b for contacting the rod.

[0025] The second upper side surface 2a of the lower measuring block 2 is inclined in the first direction, i.e., the left and right edges of the second upper side surface 2a are one above the other. Of the left and right end surfaces of the upper measuring block 1, the end surface corresponding to the upper edge of the lower side surface is a flat second contact surface 2b for contacting the rod.

[0026] In some embodiments, the upper measuring block 1 and the lower measuring block 2 have the same shape and size, that is, the lower measuring block 2 is equivalent to the upper measuring block 1 rotated 180 degrees around the center.

[0027] In this way, only two upper measuring blocks 1 need to be processed, and the production and processing process is simpler and more convenient.

[0028] The upper measuring block 1 and the lower measuring block 2 are both fixedly connected to the mounting portion 3, and the first lower side surface 1a is fitted to the second upper side surface 2a. At least one of the upper measuring block 1 and the lower measuring block 2 can be adjusted to a fixed position on the mounting portion 3. During the adjustment of the fixed position, the first lower side surface 1a and the second upper side surface 2a remain fitted. Preferably, the flatness of the first lower side surface 1a and the second upper side surface 2a is within 0.002, so that the first lower side surface 1a and the second upper side surface 2a can also maintain a good fit during relative movement. By adjusting the fixed position, the spacing between the first contact surface 1b and the second contact surface 2b in the first direction is adjusted to adapt to different internal splines.

[0029] In some embodiments, both the upper measuring block 1 and the lower measuring block 2 can be adjusted to a fixed position on the mounting portion 3 .

[0030] In this way, the measuring range of the gauge for measuring the internal spline rod spacing can be expanded.

[0031] When measuring the spacing between the internal spline rods, place the two rods on the corresponding tooth positions according to whether the number of teeth of the internal spline is even or odd; place the gauge for measuring the spacing between the internal spline rods between the two rods, adjust the spacing between the first contact surface 1b and the second contact surface 2b in the first direction, so that the first contact surface 1b and the second contact surface 2b respectively abut against the two rods, and after the adjustment is completed, fix the upper measuring block 1 and the lower measuring block 2; take out the gauge for measuring the spacing between the internal spline rods, and measure the spacing between the first contact surface 1b and the second contact surface 2b.

[0032] In some embodiments, the upper and lower measuring blocks 1 and 2 are threadedly connected to a plurality of screws 4, which can be adjusted to a fixed position on the mounting portion 3. The mounting portion 3 has a waist-shaped through-slot 3b through which the shank portions of the screws 4 pass. Specifically, a connecting sleeve 4a is sleeved over the shank portion, which is adapted to fit seamlessly into the waist-shaped through-slot 3b. The length of the connecting sleeve 4a is slightly less than the depth of the waist-shaped through-slot 3b.

[0033] In this way, by loosening the screw 4, the upper measuring block 1 or the lower measuring block 2 can be moved, and by tightening the screw 4, the upper measuring block 1 or the lower measuring block 2 can be fixed.

[0034] In some embodiments, the mounting portion 3 includes two fixing blocks 3a, which are respectively arranged on the front and rear sides of the upper measuring block 1 and the lower measuring block 2. In combination with the above arrangement, a waist-shaped through groove 3b is provided on each of the two fixing blocks 3a.

[0035] In this way, when measuring the spacing between the internal spline rods, if the upper measuring block 1 and the lower measuring block 2 can be adjusted to the fixed position on the mounting part 3, then one of them is first enabled to move so that the first contact surface 1b and the second contact surface 2b can respectively contact the two rods, which means that by moving one of the upper measuring block 1 and the lower measuring block 2, the spacing between the internal spline rods can be measured; otherwise, the one of the upper measuring block 1 and the lower measuring block 2 that has been moved is fixed, and then the other one is enabled to move.

Claims

1. A gauge for measuring the spacing between internal spline rods, characterized in that: include: The upper measuring block (1) has a first lower side surface (1a) that is inclined in a first direction; of the two end surfaces in the first direction, the end surface corresponding to the lower side surface close to the lower edge is a first contact surface (1b) for contacting the rod, which is flat; The lower measuring block (2) has a second upper side surface (2a) that is inclined in the first direction; of the two end surfaces in the first direction, the end surface corresponding to the lower side surface close to the upper edge is a second contact surface (2b) for contacting the rod, which is flat; The upper measuring block (1) and the lower measuring block (2) are both fixedly connected to the mounting portion (3), and the first lower side surface (1a) is affixed to the second upper side surface (2a); at least one of the upper measuring block (1) and the lower measuring block (2) can adjust its fixed position on the mounting portion (3), thereby adjusting the distance between the first contact surface (1b) and the second contact surface (2b) in the first direction.

2. A gauge for measuring the spacing between internal spline rods according to claim 1, characterized in that: One of the upper measuring block (1) and the lower measuring block (2) capable of adjusting a fixed position on the mounting portion (3) is threadedly connected with a plurality of screws (4); the mounting portion (3) is provided with a waist-shaped through groove (3b) for the screw rod portion of the screw (4) to pass through.

3. A gauge for measuring the spacing between internal spline rods according to claim 1, characterized in that: The mounting portion (3) comprises two fixing blocks (3a).

4. A gauge for measuring the spacing between internal spline rods according to claim 1, characterized in that: Both the upper measuring block (1) and the lower measuring block (2) can be adjusted to a fixed position on the mounting portion (3).

5. A gauge for measuring the spacing between internal spline rods according to claim 1, characterized in that: The upper measuring block (1) and the lower measuring block (2) have the same shape and size.

6. A gauge for measuring the spacing between internal spline rods according to claim 1, characterized in that: The flatness of the first lower side surface (1a) and the second upper side surface (2a) is within 0.002.

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