Circumference indexing scribing compass

An indexing and gauge technology, applied in metal processing mechanical parts, precision positioning equipment, metal processing equipment, etc., can solve the problems of high cost of indexing tools, cumbersome operation, poor accuracy, etc., to achieve simple use, accurate adjustment, Efficient indexing effect

Active Publication Date: 2015-03-04
CHONGQING XINXING GEAR WHEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the disadvantages of high cost, cumbersome operation and poor precision of indexing tools in the prior art,

Method used

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  • Circumference indexing scribing compass
  • Circumference indexing scribing compass
  • Circumference indexing scribing compass

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1:

[0030] Such as image 3 As shown, the inner hole diameter of the part is Φ340mm, the required indexing circumference diameter is Φ410 mm, the positioning diameter of the positioning pin 3 is 10mm, and the measuring diameter is 20mm. The radial length or diameter of the indexing slider 4 and the fixed pin 2 are both 10mm. Use a vernier caliper to measure the distance D1 between the two positioning pins 3 and the fixed pin 2, considering that the positioning pin 3 and the fixed pin 2 have a certain size, so to ensure that the two positioning pins 3 are tangent to the inner hole of the part, draw a rule The center of rotation of the body 1 (that is, the center of the fixed pin 2) coincides with the center of the part. D1 should meet: D1=170 (radius of the inner hole of the part) + 10 (radius of the fixed pin + radius of the positioning pin) = 180mm, and then Use a vernier caliper to measure the distance D2 between the indexing slider 4 and the fixed pin 2. It is ...

Example Embodiment

[0033] Example 2:

[0034] Such as Figure 4 As shown, the outer diameter of the part is Φ500mm, the required indexing circumference diameter is Φ410 mm, the positioning diameter of the positioning pin 3 is 10mm, and the measuring diameter is 20mm. The radial length or diameter of the indexing slider 4 and the fixed pin 2 are both 10mm. Use a vernier caliper to measure the distance D1 between the two positioning pins 3 and the fixed pin 2, so to ensure that the two positioning pins 3 are tangent to the outer circle of the part, the center of rotation of the ruler body 1 (that is, the center of the fixed pin 2) and The center of the parts coincide, D1 should meet: D1=250 (part outer radius) + 20 (fixed pin radius + positioning pin positioning radius + positioning pin measurement radius) = 270mm, then use the vernier caliper to measure the indexing slider 4 and fix The distance D2 between the pins 2 also takes into account that the indexing slider 4 and the fixed pin 2 have a certa...

Example Embodiment

[0042] Example 3:

[0043] Such as Image 6 As shown, the diameter of the inner hole of the part is Φ500 mm, the fixed pin 2 is on the circle with the center of the gauge body as the center and the radius is 400 mm, the required indexing circle diameter is Φ600 mm, and the positioning diameter of the positioning pin 3 is 10mm. The diameter is 20mm, the radial length or diameter of the indexing slider 4 and the fixed pin 2 are both 10mm, and the distance D1 between the two positioning pins 3 and the fixed pin 2 is measured with a vernier caliper, taking into account the positioning pin 3 and the fixed pin 2. It has a certain size. Therefore, in order to ensure that when the two positioning pins 3 are tangent to the inner hole of the part, the center of rotation of the ruler body 1 coincides with the center of the part, D1 should meet: D1=400 (circumference radius where the fixed pin is located)-250 ( Part inner hole radius) + 20 (fixed pin radius + locating pin positioning radius ...

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Abstract

The invention discloses a circumference indexing scribing compass, relates to a special indexing tool, and is used for solving the problems that the manual indexing scribing method in the prior art is fussy, low in efficiency, and poor in precision. The circumference indexing scribing compass comprises a fan-shaped scribing compass body, a fixed pin, a positioning pin and an indexing sliding block, wherein the fixed pin is positioned in the centre of the scribing compass body; at least four sliding grooves which are distributed radially and can be matched with the positioning pin and the indexing sliding block are formed in the scribing compass body; an indexing through hole is formed in the center of the indexing sliding block. Meanwhile, the invention also provides a circumference indexing scribing compass which aims at a large-diameter component. The two scribing compasses are easy to use and accurate in adjustment; high-efficiency indexing can be performed by changing the positions of the positioning pin and the indexing sliding block at any time according to the requirements on the size of a component at a production site; the scribing compasses are high in drilling efficiency and drilling precision.

Description

technical field [0001] The invention belongs to the field of mechanical processing tools, and relates to a special indexing tool, in particular, it is a circular indexing planer whose internal and external cylinders can be used as positioning references. Background technique [0002] Before drilling cylindrical parts, planners are generally used to draw the circumference diameter based on the center of the part. After the position of the first hole is determined, the circumference diameter is graduated according to the chord length of each equal division. However, ordinary planning requires repeated marking, low production efficiency, and poor precision. Therefore, drilling jigs are often used for batch parts, but the cost of jigsaw is high, the operation is very cumbersome, and the accuracy of the indexing is also limited by the size of the positioning reference. . Contents of the invention [0003] Aiming at the disadvantages of high cost, cumbersome operation and poor ...

Claims

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Application Information

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IPC IPC(8): B23Q16/02
CPCB23Q16/022
Inventor 朱桐清何磊彭建瑜周学奎
Owner CHONGQING XINXING GEAR WHEEL
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