CN203031351U - High-speed numerical-control drilling fixture for thin pipe plates - Google Patents
High-speed numerical-control drilling fixture for thin pipe plates Download PDFInfo
- Publication number
- CN203031351U CN203031351U CN 201220737772 CN201220737772U CN203031351U CN 203031351 U CN203031351 U CN 203031351U CN 201220737772 CN201220737772 CN 201220737772 CN 201220737772 U CN201220737772 U CN 201220737772U CN 203031351 U CN203031351 U CN 203031351U
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- pipe
- speed
- hole
- tube sheet
- bearing
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- Expired - Lifetime
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Abstract
The utility model provides a high-speed numerical-control drilling fixture for thin pipe plates. The high-speed numerical-control drilling fixture comprises a boss-shaped support. A pipe plate is arranged on the support, a positioning hole is drilled at a pipe hole of the pipe plate, and a matched bolt hole is reserved on the top of the corresponding support. Pressing bolts are fittingly mounted in the positioning hole and the bolt hole to fixedly connect the pipe plate with the top of the support. The bottom of the support and a numerical-control drill platform are connected through a fixing device. The high-speed numerical-control drilling fixture solves the problem of poor rigidity in the middle during high-speed drilling of large thin pipe plates, effectively suppresses self-vibration of the pipe plate and resonance transmitted by a drill and meets the requirements for quality of one-step high-speed drilling of thin-plate numerical-control multi-drill and service life of a drill bit. The fixture can improve rigidity of the pipe plate during high-speed drilling, flatness, pipe hole accuracy, pipe hole roughness and work efficiency of the pipe plate can be greatly improved, product quality is improved, and production cost is saved greatly.
Description
Technical field
The utility model relates to the numerical control drilling machine manufacture field, specifically is the self-align anchor clamps of the pore processing on a kind of large-scale thin tubesheet.
Background technology
Along with the overall dimensions of modular condenser end tube sheet constantly increase, pore quantity is more and more (individual tube sheet hole count surpasses 20,000) also, and the machining accuracy of pore and roughness require also to improve constantly.The pore roughness of traditional low speed boring, reaming and fraising processing satisfies specification requirement, and the bridge between the positional precision of pore and the adjacent pore is apart from still having bigger error; And when NC multi-head drilling machine carries out High-speed machining, the positioning accuracy height of Digit Control Machine Tool, good rigidly, drill speed height, the crudy of pore is guaranteed, but because tube sheet self rigidity is very poor and the uncertainty of tube sheet interstitial hole position, can't adopt accurately fixing rigidity clamping, serious vibration when causing the tube sheet high-speed drilling, be out of shape bigger, circularity and the linearity of pore are relatively poor, influence crudy and the efficient in hole, cause cutter badly damaged.
Summary of the invention
The utility model purpose is to provide a kind of and during high-speed drilling, strengthens the support of its rigidity, adjustable clamping position and the frock that compresses on thin tubesheet.
The technical scheme that the utility model adopts is:
A kind of thin tubesheet high-speed numeric control boring grab, comprise bearing, this bearing is the boss shape, tube sheet is placed at the top, locating hole is bored at pore place at tube sheet, corresponding bearing top is provided with supporting bolt hole, cooperates the installation hold-down bolt in locating hole and the bolt hole, tube sheet and bearing top are fastenedly connected; The bottom of described bearing is connected by prohibiting fixing apparatus with the numerical control drilling machine platform.
Be provided with damping ring between described tube sheet and the bearing top.
Be provided with the locking strip of hold-down bolt in the bolt hole at described bearing top.
Described taboo fixing apparatus is bolt connection piece.
The beneficial effect that the utility model produces is:
The technical problems to be solved in the utility model, provide the support of the enhancing rigidity of large-scale thin tubesheet high-speed drilling, adjustable clamping position and the frock that compresses, these anchor clamps can strengthen the rigidity of tube sheet when high-speed drilling, its tube sheet flatness, pore precision, pore roughness and operating efficiency all are greatly improved, and have saved a large amount of production costs when improving the quality of products.The high vibration that the utility model has produced when having realized avoiding powerful cutting force that high-speed drilling produces to the very poor large-scale tube sheet high-speed drilling of rigidity has realized carrying out at thin tubesheet that digital control hole drilling in enormous quantities is efficient, high-quality to be finished.
The difficult problem of middle part poor rigidity when the utility model has solved large-scale thin tubesheet high-speed drilling, the resonance that the vibration of tube sheet self and drilling machine transmit when effectively having contained high-speed drilling has realized that the thin plate numerical control multi-shaft bores the quality, the requirement of bit life behind the high-speed drilling one time.These anchor clamps can strengthen the rigidity of tube sheet when high-speed drilling, and its tube sheet flatness, pore precision, pore roughness and operating efficiency all are greatly improved, and have saved a large amount of production costs when improving the quality of products.
Description of drawings
Fig. 1 tube sheet clamping schematic diagram
Number in the figure is represented: 1-copper washer, 2-damping ring, 3-locking strip, 4-bolt, 5-nut, 6-packing ring, 7-bearing, 8-hold-down bolt, 9-tube sheet, 10-numerical control drilling machine platform.
The specific embodiment
As shown in Figure 1, the utility model is a kind of thin tubesheet high-speed numeric control boring grab, is a kind of self-align anchor clamps of large scale tube sheet High-speed Computer number control processing.Thin tubesheet high-speed numeric control boring grab comprises bearing 7, and this bearing 7 is the boss shape, tube sheet 9 is placed at the top.Locating hole is bored at pore place at tube sheet 9, corresponding bearing 7 tops are provided with supporting bolt hole, cooperates installation hold-down bolt 8 in locating hole and the bolt hole, the top of tube sheet 9 with bearing 7 is fastenedly connected.Be provided with the locking strip 3 of hold-down bolt 8 in the bolt hole at bearing 7 tops.Be provided with damping ring 2 between the top of tube sheet 9 and bearing 7, this damping ring 2 is MC notes type nylon damping rings 2, and the special construction of MC notes type nylon gasket ring 2 possesses damping, cutter relieving function.Be provided with copper washer 1 between hold-down bolt 8 heads and the tube sheet 9.
The bottom of bearing 7 is connected by prohibiting fixing apparatus with numerical control drilling machine platform 10, and this taboo fixing apparatus is bolt connection piece, pressing plate or other version.In this specific embodiment, bearing 7 is fixed on by T-slot bolt 4 on the T-slot platform of numerical control drilling machine platform 10, fixes by the equidistant placement pressing plate around the tube sheet 9.
Add man-hour when numerical control drilling machine carries out the high speed hole, clamping position is adjusted automatically with the pore position of tube sheet 9.The vibration of tube sheet 9 self and the resonance of drilling machine transmission have all obtained effective containment, make machining accuracy and production efficiency be improved, substitute simultaneously that the repetitive positioning accuracy of lathe also is guaranteed behind the blade, the probability that elliptical aperture occurs reduces greatly, has improved product quality.
Concrete using method of the present utility model is as follows:
1, according to pore layout drawing and tube sheet 9 size of tube sheet 9, choose the pore 9 of some in the centre position of pore layout drawing as the anchor point (position of positioning hole) of actual product, as compressing a little, and calculate these positioning point coordinate values during practical operation, with the relatively poor position of thin tubesheet 9 middle part rigidity.Attention: connect because anchor point carries out bolt after need holing, therefore must select hole in the pore district as anchor point.
2, according to the coordinate figure that calculates, arrange bearing 7 at the T-slot platform of numerical control drilling machine platform 10, be about to bearing 7 and place the nearest numerical control drilling machine T type groove place of the tight point of tripping, determine along the position of T type groove direction, again coordinate figure imported the layout precision of confirming bearing 7 in the Digit Control Machine Tool by the trial run drill bit according to the numerical control coordinate, by fastening bolt 4, nut 5, packing ring 6 bearing 7 is fixed then.
3, place MC notes type nylon damping rings 2 at bearing 7, again tube sheet 9 opsition dependents are placed, behind the centering, use pressing plate to compress around the tube sheet 9.The operating numerical control drilling machine gets out the locating hole at the anchor point place low speed preboring of going ahead of the rest then, with hold-down bolt 8 tube sheet 9 is fixed on the bearing 7 again, drives locking strip 3 lockings, and tube sheet 9 is connected closely with bearing 7.
Attention: the pressing plate adjustable position on the bearing 7, be convenient to bolt and connect; Separate with MC notes type nylon damping ring 2 between tube sheet 9 and the bearing 7, avoided drill bit to get into the surface of bearing 7 and damage blade.
4, start the numerical control drilling machine program finish in advance, finish all borings.
5, with clamp loose around the tube sheet 9, treat behind tube sheet 9 Free Transforms again will around pressing plate tighten.
By above-mentioned steps, can strengthen the rigidity of large scale tube sheet 9 high speed holes processing, guarantee the quality of product.
Claims (4)
1. thin tubesheet high-speed numeric control boring grab, it is characterized in that: comprise bearing, this bearing is the boss shape, tube sheet is placed at the top, locating hole is bored at pore place at tube sheet, corresponding bearing top is provided with supporting bolt hole, cooperates the installation hold-down bolt in locating hole and the bolt hole, tube sheet and bearing top are fastenedly connected; The bottom of described bearing is connected by prohibiting fixing apparatus with the numerical control drilling machine platform.
2. thin tubesheet high-speed numeric control boring grab according to claim 1 is characterized in that: be provided with damping ring between described tube sheet and the bearing top.
3. thin tubesheet high-speed numeric control boring grab according to claim 1 is characterized in that: the locking strip that is provided with hold-down bolt in the bolt hole at described bearing top.
4. thin tubesheet high-speed numeric control boring grab according to claim 1, it is characterized in that: described taboo fixing apparatus is bolt connection piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220737772 CN203031351U (en) | 2012-12-28 | 2012-12-28 | High-speed numerical-control drilling fixture for thin pipe plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220737772 CN203031351U (en) | 2012-12-28 | 2012-12-28 | High-speed numerical-control drilling fixture for thin pipe plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203031351U true CN203031351U (en) | 2013-07-03 |
Family
ID=48683494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220737772 Expired - Lifetime CN203031351U (en) | 2012-12-28 | 2012-12-28 | High-speed numerical-control drilling fixture for thin pipe plates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203031351U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104325319A (en) * | 2014-10-20 | 2015-02-04 | 芜湖市泰能电热器具有限公司 | Base for shell fixture |
-
2012
- 2012-12-28 CN CN 201220737772 patent/CN203031351U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104325319A (en) * | 2014-10-20 | 2015-02-04 | 芜湖市泰能电热器具有限公司 | Base for shell fixture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |