CN216263642U - Trial boring tool - Google Patents
Trial boring tool Download PDFInfo
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- CN216263642U CN216263642U CN202121244490.1U CN202121244490U CN216263642U CN 216263642 U CN216263642 U CN 216263642U CN 202121244490 U CN202121244490 U CN 202121244490U CN 216263642 U CN216263642 U CN 216263642U
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- trial boring
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- boring
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Abstract
The utility model relates to a trial boring tool, which comprises a three-jaw chuck, clamping jaws and trial boring blocks, wherein the three clamping jaws are respectively assembled on the three-jaw chuck, the clamping jaws can move along the radial direction of the three-jaw chuck, each clamping jaw is respectively fixed with one trial boring block, each trial boring block is of a fan-shaped structure with a central angle of 120 degrees, an inner arc cylindrical surface to be subjected to trial boring is arranged on the inner side of each trial boring block, the three trial boring blocks can be combined to form one circular trial boring hole, a fan-shaped centering plate is arranged on the bottom surface of each trial boring block, and the arc radius of the inner side of each centering plate is smaller than the radius of the circular trial boring hole. The utility model can be repeatedly used, the using times of the utility model can reach as many as 15-20 times, and the rough material of the trial boring block is leftover material, thereby greatly reducing the cost of the rough material; the mode that adopts the three-jaw chuck is simple to use, and the processing cost before the secondary use is low, has improved the machining efficiency of trial boring piece, has reduced the processing cost of frock itself.
Description
Technical Field
The utility model relates to the technical field of boring machine machining, in particular to a trial boring tool.
Background
In the current stage, in order to ensure that the hole precision is qualified, trial boring is carried out on a fine hole boring (a hole with the diameter of more than or equal to ∅ 50 mm) of a high-value part and a heavy-duty part by using a trial boring block made of the same material before boring, the material value of the part is usually very high and is about 500 yuan/Kg (titanium alloy), the value (blank price) of one trial boring block is usually about 0.5-1.0 ten thousand, the processing cost of the trial boring block is relatively high, and the trial boring is meaningless if the precision of the processed part hole is difficult to ensure by using other materials.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a trial boring tool.
The purpose of the utility model is realized by the following technical scheme:
the trial boring tool comprises a three-jaw chuck, clamping jaws and trial boring blocks, wherein the three clamping jaws are assembled on the three-jaw chuck respectively, the clamping jaws can move along the radial direction of the three-jaw chuck, a trial boring block is fixed on each clamping jaw respectively, each trial boring block is of a fan-shaped structure with a central angle of 120 degrees, an inner arc cylindrical surface to be subjected to trial boring is arranged on the inner side of each trial boring block, the three trial boring blocks can be combined to form a circular trial boring hole, a fan-shaped centering plate is arranged on the bottom surface of each trial boring block, and the radius of an inner arc of each centering plate is smaller than that of the circular trial boring hole.
Furthermore, a connecting block is fixed on the side wall of the clamping jaw, at least two pins are fixed on the top surface of the connecting block, pin holes are correspondingly formed in the bottom surface of the centering plate, and the pins are inserted into the corresponding pin holes to realize the connection and fixation between the trial boring block and the connecting block.
Furthermore, the connecting block is welded and fixed on the clamping jaw.
Furthermore, the trial boring block is made of titanium alloy leftover materials.
The utility model has the following advantages:
1. the trial boring block with the structure can be repeatedly used, the using times of the trial boring block can reach 15-20 times, and the rough material of the trial boring block is leftover material, so that the cost of the rough material is greatly reduced (the cost of the rough material at one trial boring step is changed into 250-700 yuan according to normal purchased material, and the cost of the rough material can be ignored according to the leftover material).
2. The fixture is simple to use in a three-jaw chuck mode, the machining cost before secondary use is low, the machining efficiency of the trial boring block is improved, and the machining cost of the fixture is reduced.
Drawings
FIG. 1 is a first schematic diagram of an explosive structure according to the present invention;
FIG. 2 is a second schematic illustration of the explosive structure of the present invention;
FIG. 3 is a schematic view of an assembly structure of the present invention;
FIG. 4 is a schematic top view of the assembled structure of the present invention;
FIG. 5 is a schematic cross-sectional view taken along line A-A of FIG. 4;
FIG. 6 is a schematic mounting diagram of the trial boring tool of the utility model during correction;
FIG. 7 is a schematic diagram of a trial boring process of the present invention;
in the figure: 1-three-jaw chuck, 2-clamping jaw, 3-connecting block, 4-pin, 5-mandrel, 6-trial boring block, 7-centering plate and 8-pin hole.
Detailed Description
The utility model will be further described with reference to the accompanying drawings, but the scope of the utility model is not limited to the following.
As shown in fig. 1 to 6, the trial boring tool comprises a three-jaw chuck 1, three clamping jaws 2 and trial boring blocks 6, wherein the three clamping jaws 2 are respectively assembled on the three-jaw chuck 1, the clamping jaws 2 can move along the radial direction of the three-jaw chuck 1, one trial boring block 6 is respectively fixed on each clamping jaw 2, each trial boring block 6 is of a fan-shaped structure with a central angle of 120 degrees, an inner arc cylindrical surface to be trial bored is arranged on the inner side of each trial boring block 6, the three trial boring blocks 6 can be combined to form one circular trial boring hole, a fan-shaped centering plate 7 is arranged on the bottom surface of each trial boring block 6, and the radius of the inner arc of each centering plate 7 is smaller than the radius of the circular trial boring hole.
Further, be fixed with connecting block 3 on the lateral wall of clamping jaw 2, connecting block 3 adopts 45 steel, the top surface of connecting block 3 is fixed with two at least pins 4, the bottom surface of centering plate 7 corresponds to open has pinhole 8, in pin 4 inserts corresponding pinhole 8, realize the connection between trial boring piece 6 and the connecting block 3 and fix. Under the normal condition, the pin hole 8 of the trial boring block 5 is in interference fit with the pin 4, the trial boring block 6 and the connecting block 3 can be fixedly connected, in order to achieve more reliable axial fixation, a bolt can be locked into the connecting block 3 from the rear side, and the bolt is in threaded connection with the centering plate 7.
Further, the connecting block 3 is fixed on the clamping jaw 2 in a welding mode.
Furthermore, the trial boring block 6 adopts titanium alloy leftover materials, so that the trial boring cost is greatly reduced, and the trial boring effect is not influenced. Even if the purchased materials are adopted for processing, the material cost is greatly reduced because the purchased materials can be used for multiple times.
As shown in fig. 7, the trial boring method of the trial boring tool includes the following steps:
s1, assembling: respectively fixing the three trial boring blocks 6 on the clamping jaw 2, and adjusting the position of the clamping jaw 2 to splice the three trial boring blocks 6 together and form a circular trial boring hole with the radius of R1;
s2, trial boring: trial boring is carried out on the round trial boring hole, and the radius of the round hole after trial boring is R2;
s3, correction: the core rod 5 is arranged in the three-jaw chuck 1, the core rod 5 is clamped by the inner side wall of the centering plate 7, the trial boring blocks 6 are opened, the inner arc cylindrical surface of each trial boring block 6 and binding surfaces on two sides of the inner arc cylindrical surface are trimmed, the radius of the inner arc cylindrical surface is R1, the extending surfaces of the two binding surfaces pass through the axis of the inner arc cylindrical surface, then the core rod 5 is taken down, the three-jaw chuck 1 is tightened, the trial boring tool returns to a state to be subjected to trial boring, and the inner arc cylindrical surfaces of the three trial boring blocks 6 are recombined to form a circular trial boring hole with the radius of R1;
s4, repeating the steps S2-S3.
Further, the radius of the inner arc of the centering plate 7 is equal to the radius of the core rod 5.
Taking trial boring of an inner hole with the diameter of phi 100mm as an example, the diameter of a coarse hole before trial boring is phi 99 mm.
Trial boring for the first time, namely trial boring a phi 99mm coarse hole into a phi 100mm inner hole; the core rod 5 is clamped by the centering plate 7, so that the trial boring block 6 is opened, the inner arc cylindrical surface and the binding surfaces on the two sides of the inner arc cylindrical surface are trimmed, the radius of the inner arc cylindrical surface is 49.5mm, the central angle of the trial boring block 6 keeps 120 degrees, the core rod 5 is taken down, the three-jaw chuck 1 is tightened, the trial boring tool returns to a state to be subjected to trial boring, the inner diameter of the circular trial boring hole at the moment is phi 99mm, and the appearance of the trial boring tool is a three-section arc (the appearance is not a full circle, but does not influence the trial boring inner hole).
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. Trial boring frock, its characterized in that: the three-jaw boring fixture comprises a three-jaw chuck (1), clamping jaws (2) and trial boring blocks (6), wherein the three clamping jaws (2) are assembled on the three-jaw chuck (1) respectively, the clamping jaws (2) can move along the radial direction of the three-jaw chuck (1), each clamping jaw (2) is fixedly provided with one trial boring block (6), each trial boring block (6) is of a fan-shaped structure with a central angle of 120 degrees, an inner arc cylindrical surface to be trial bored is arranged on the inner side of each trial boring block (6), the three trial boring blocks (6) can be combined to form one round trial boring hole, a fan-shaped centering plate (7) is arranged on the bottom surface of each trial boring block (6), and the arc radius of the inner side of each centering plate (7) is smaller than the radius of the round trial boring hole.
2. The trial boring tool of claim 1, wherein: be fixed with connecting block (3) on the lateral wall of clamping jaw (2), the top surface of connecting block (3) is fixed with two at least pins (4), the bottom surface of centering plate (7) corresponds and opens there are pinhole (8), pin (4) insert in pinhole (8) that correspond, realize trial boring piece (6) and connecting block (3) between be connected fixedly.
3. The trial boring tool of claim 2, wherein: the connecting block (3) is fixed on the clamping jaw (2) in a welding mode.
4. The trial boring tool of claim 1, wherein: the trial boring block (6) is made of titanium alloy leftover materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121244490.1U CN216263642U (en) | 2021-06-04 | 2021-06-04 | Trial boring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121244490.1U CN216263642U (en) | 2021-06-04 | 2021-06-04 | Trial boring tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216263642U true CN216263642U (en) | 2022-04-12 |
Family
ID=81058055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121244490.1U Active CN216263642U (en) | 2021-06-04 | 2021-06-04 | Trial boring tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216263642U (en) |
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2021
- 2021-06-04 CN CN202121244490.1U patent/CN216263642U/en active Active
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