CN214099569U - Fixing assembly for machining X-ray rotary anode target disc - Google Patents

Abstract

The utility model discloses a fixed subassembly for processing of rotatory anode target dish of X ray, this fixed subassembly for processing of rotatory anode target dish of X ray includes: a fixed shaft and a target disc; the fixed shaft is provided with a first fixed part, a second fixed part and a third fixed part which are sequentially connected and the outer diameters of which are sequentially increased; wherein, the target plate is fixed on the second fixing part; the target disc of the utility model is provided with a limit through hole, and the second fixed part is provided with a limit clamping groove correspondingly matched with the limit through hole; the fixing component also comprises a limiting component, and the limiting component is sleeved on the first fixing part and is abutted against the target disc; the third fixing part of the utility model is clamped on the lathe; when the target disc of the utility model is machined by a lathe, an operator can utilize the dial indicator to perform real-time run-out detection on the target disc clamped by the fixed component; if the jumping detection result is unqualified, the operator can process the target disc again on the premise that the target disc still has machining allowance until the jumping detection is qualified.

Description

Fixing assembly for machining X-ray rotary anode target disc

Technical Field

The utility model relates to a target processing technology field especially relates to a fixed subassembly that is used for processing of rotatory positive pole target dish of X ray.

Background

A rotary anode X-ray tube is a component of an X-ray diagnostic apparatus which shortens the exposure time of X-ray photography and obtains a clear image. The simplest way of generating X-rays is to hit a metal target, which in a rotating anode X-ray tube is a rotating anode target disk, with accelerated electrons. Early target disks were all made of pure tungsten to increase heat storage capacity. The target disc is developed into a molybdenum-based tungsten target structure after the sixty years, namely, a target disc substrate is made of molybdenum, the surface of the target disc substrate is still covered by blunt tungsten, and the target disc substrate and the blunt tungsten are tightly compounded. The back side of the molybdenum substrate is generally planar and is blackened to increase heat radiation. But ribbed bump reinforcement structures are also made. The back side of the target disk is provided with reinforcing ribs which increase mechanical strength and enlarge surface area to improve heat dissipation. The thickness of a typical pure tungsten target disk is about 3.2 mm, while the thickness of a molybdenum-based pure target is about 7.1 mm. The target disc tearing phenomenon is not rare under the conditions of weight increment, rotating speed increase and load surge. When the target disk is not machined properly and deformed or the weight distribution is not uniform, the phenomenon that the target disk is torn easily occurs when the rotary anode X-ray tube works due to the fact that stress is concentrated on a certain part of the target disk.

In the existing target disk processing technology, the target disk needs to be subjected to run-out detection to judge whether the target disk is deformed or not. The conventional run-out detection is that the deflection instrument is matched with a dial indicator to check the run-out of the processed target disc. However, such detection after production is finished cannot provide a dynamic detection result in the machining process in real time, and the rework margin of the detected unqualified product is very small, so that the difficulty of reworking and repairing is very high, and batch waste is easily caused.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a fixing assembly for processing an X-ray rotary anode target disk, aiming at the technical problem that the real-time jumping detection of the target disk cannot be carried out in the existing target disk processing technology.

A fixing component for machining an X-ray rotary anode target disc comprises a fixing shaft and a target disc; the fixed shaft is provided with a first fixed part, a second fixed part and a third fixed part which are connected in sequence, the target disc is fixed on the second fixed part, and the target disc is provided with a limiting through hole.

In one embodiment, the outer diameters of the first fixing portion, the second fixing portion and the third fixing portion are sequentially increased.

In one embodiment, the second fixing portion has a limiting slot corresponding to the limiting through hole.

In one embodiment, the device further comprises a limiting component, wherein the limiting component is sleeved on the first fixing part and abuts against the target disc.

In one embodiment, the limiting assembly includes a limiting block and a gasket, the limiting block and the gasket are both sleeved on the first fixing portion, and the gasket abuts against the target plate.

In one embodiment, the third fixing portion is clamped to a lathe.

The aforesaid is used for fixed subassembly of rotatory anode target dish processing of X ray is connected according to the preface through setting up to the external diameter is fixed in the second fixed part as axle core according to first fixed part, second fixed part and the third fixed part that increases gradually according to the preface, and goes on this fixed subassembly clamping to the lathe the utility model discloses a processing of the rotatory anode target dish of X ray. The second fixing part of the utility model is matched with the limiting through hole of the target disc through the limiting clamping groove, so that the target disc and the second fixing part do not rotate relatively; one side surface of the target disc is abutted against the third fixed part of the utility model, and the other side surface is abutted against the limiting component sleeved on the first fixed part; the utility model discloses a spacing subassembly includes gasket and stopper, is fixed in above-mentioned second fixed part with the target dish. When the target disc is machined by a lathe, the machined surface of the target disc can be subjected to real-time run-out detection through the dial indicator. When the runout of the target disc exceeds the qualified range, the turning tool can be dynamically adjusted, the target disc is machined again on the premise that the machining allowance still exists, the workpiece does not need to be frequently assembled and disassembled, machining errors are reduced, and the consistency of machining and detection of the workpiece is guaranteed.

Drawings

FIG. 1 is a schematic structural view of a fixing assembly in one embodiment;

FIG. 2 is a schematic sectional view of the fixing member and the target plate of the embodiment shown in FIG. 1;

FIG. 3 is a front view of the target disk of the embodiment of FIG. 1;

fig. 4 is a left side view of the embodiment of fig. 1.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Referring to fig. 1 and 2, the present invention discloses a fixing assembly for processing an X-ray rotary anode target disk, which includes a fixing shaft 1 and a target disk 2. The fixed shaft 1 has a first fixed part 11, a second fixed part 12 and a third fixed part 13 connected in sequence. The target disk 2 is fixed to the second fixing portion 12, the outer diameters of the first fixing portion 11, the second fixing portion 12 and the third fixing portion 13 are sequentially increased, and the third fixing portion 13 is clamped to a lathe. In the embodiment, the outer diameters of the first fixing portion 11, the second fixing portion 12 and the third fixing portion 13 are sequentially increased, so that the target disk 2 abuts against the third fixing portion 13 with a larger outer diameter when being mounted on the second fixing portion 12, and the first fixing portion 11 with a smaller outer diameter can limit the limiting component to slide towards the second fixing portion 12, thereby ensuring a fixing area and a good fixing effect of the target disk 2. The third fixing portion 13 is used for mounting and connecting the lathe and the fixing component, and the rigidity of the target disk 2 can be improved by adopting a larger outer diameter compared with the first fixing portion 11 and the second fixing portion 12, so that the vibration of the fixing component in the machining process is reduced, and the machining precision can be effectively improved. In this embodiment, the utility model discloses a target dish 2 is fixed in above-mentioned second fixed part 12, the foretell third fixed part 13 of a side butt of target dish 2, and the utility model discloses a first fixed part 11 is used for cooperating with the beat appearance, and target dish 2 when this embodiment need use the beat appearance to examine time measuring, and operating personnel need not frequent dismouting and treats target dish 2 of processing, and the beat appearance can directly cooperate with above-mentioned first fixed part 11 to beat detection to target dish 2.

Referring to fig. 1, 2, 3 and 4, in the present embodiment, the target plate 2 of the present invention has a limiting through hole 21, and the second fixing portion 12 has a limiting slot 121 correspondingly matching with the limiting through hole 21. The utility model discloses a fixed subassembly still includes spacing subassembly 3, and this spacing subassembly 3 includes stopper 31 and gasket 32, and first fixed part 11 is all located to stopper 31 and gasket 32 cover. One side surface of the spacer 32 abuts against the target plate 2, and the other side surface thereof abuts against the stopper 31. In this embodiment, the utility model discloses a spacing through-hole 21 of target dish 2 cooperates with spacing draw-in groove 121 of second fixed part 12 for relative rotation does not take place for target dish 2 and second fixed part 12, can effectively improve precision and efficiency that add man-hour to target dish 2. The stopper 31 and the spacer 32 in this embodiment fix the target plate 2 to the second fixing portion 12, so that the target plate 2 does not move axially, and the target plate 2 is prevented from coming off in the machining process.

In summary, in the above-mentioned embodiment, the utility model discloses a fixed subassembly of rotatory anode target dish processing of X ray is connected according to the preface through the setting to first fixed part, second fixed part and the third fixed part that the external diameter increases gradually according to the preface are as the axle center, and are fixed in the second fixed part with foretell target dish as spacing subassembly through stopper and gasket. In the fixing unit of the present embodiment, the target disk is machined by clamping the fixing unit to a lathe by the third fixing portion. The target disc is provided with a limiting through hole, the second fixing part in the embodiment is provided with a limiting clamping groove correspondingly matched with the limiting through hole, and the target disc can be prevented from rotating relative to the second fixing part through the limiting through hole and the limiting clamping groove; a side of target dish and the third fixed part butt in this embodiment, the gasket butt of above-mentioned first fixed part is located with the cover to its another side, the utility model discloses a first fixed part is located to the stopper cover to with above-mentioned gasket butt, be fixed in above-mentioned second fixed part with the target dish, can avoid the relative slip of target dish and second fixed part. When the target disc is machined by a lathe, an operator can perform real-time run-out detection on the machined surface of the periphery of the target disc through the dial indicator. When the machined surface of the target disc jumps beyond the qualified range, an operator can dynamically adjust the turning tool, and the target disc is machined again on the premise that the machining allowance still exists in the target disc to be machined until the target disc is qualified in jumping detection. The utility model discloses a fixed subassembly of rotatory anode target dish processing of X ray for the target dish is carrying out lathe machining man-hour, can utilize the percentage table to carry out the real-time run-out of target dish periphery machined surface and detect, need not frequently to load and unload the target dish, has reduced machining error, and has guaranteed the uniformity to target dish processing and detection.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (6)

1. A fixture assembly for X-ray rotary anode target disk machining, comprising: a fixed shaft and a target disc; the fixed shaft is provided with a first fixed part, a second fixed part and a third fixed part which are connected in sequence, the target disc is fixed on the second fixed part, and the target disc is provided with a limiting through hole.

2. The fixture assembly of claim 1, wherein the outer diameters of the first fixture, the second fixture, and the third fixture increase in order.

3. The fixture assembly of claim 1, wherein the second fixture has a position-limiting slot corresponding to the position-limiting through hole.

4. The fixture assembly of claim 3, further comprising a limiting assembly, wherein the limiting assembly is sleeved on the first fixture and abuts against the target disk.

5. The fixture assembly of claim 4, wherein the limiting assembly comprises a limiting block and a gasket, the limiting block and the gasket are sleeved on the first fixture, and the gasket abuts against the target disk.

6. The fixture assembly of any of claims 1-5, wherein the third fixture is clamped to a lathe.

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