Filament detection and adjustment system and method for a cathode head assembly

Abstract

The application provides a filament detection and adjustment system and method suitable for a cathode head assembly, comprising: a reference platform; a filament fine adjustment device, the filament fine adjustment device comprising a carrier frame, a cathode head fixer and a support rod lifter, the carrier frame being translatably arranged on the reference platform, the cathode head fixer being arranged on the top of the carrier frame to detachably fix the cathode head on the carrier frame, and the support rod lifter being arranged on the carrier frame to drive the support rod to perform lifting movement; a height detection device, the height detection device comprising an overhead adjustment frame and a displacement amount precision detector, the overhead adjustment frame being arranged on the reference platform, and the displacement amount precision detector being arranged on the overhead adjustment frame; and a touch reminding circuit, the touch reminding circuit being used to remind the staff whether the displacement amount precision detector touches the cathode head or the filament. The application can accurately measure the height of the filament relative to the cathode head in the form of touch reminding, and can accurately adjust the height of the filament relative to the cathode head.

Description

Technical Field

[0001] This invention relates to the field of X-ray tube technology, and in particular to a filament detection and adjustment system and method suitable for cathode head assemblies. Background Technology

[0002] An X-ray tube is a vacuum diode operating at high voltage. It contains two electrodes: a filament that emits electrons, serving as the cathode, and a target that receives the electron bombardment, serving as the anode. Both electrodes are sealed within a high-vacuum glass or ceramic housing. The power supply section of an X-ray tube includes at least a low-voltage power supply to heat the filament and a high-voltage generator to apply a high voltage to the electrodes. When a sufficient current is passed through the tungsten filament to generate an electron cloud, and a sufficient voltage (in the kilovolt range) is applied between the anode and cathode, the electron cloud is drawn towards the anode. At this point, the electrons, in a high-energy, high-speed state, collide with the tungsten target. Upon reaching the target surface, their motion is suddenly halted, and a small portion of their kinetic energy is converted into radiant energy, emitted as X-rays. This type of radiation is called bremsstrahlung. Changing the filament current alters the filament temperature and the amount of electrons emitted, thereby changing the tube current and the intensity of the X-rays. Changing the excitation potential of the X-ray tube or selecting different target materials can alter the energy of the incident X-rays or their intensity at different energies. Due to the high-energy electron bombardment, X-ray tubes operate at very high temperatures, requiring forced cooling of the anode target. Although the energy efficiency of X-ray generation is extremely low, X-ray tubes remain the most practical X-ray generating devices and are widely used in X-ray instruments. Currently, medical applications are mainly divided into diagnostic X-ray tubes and therapeutic X-ray tubes.

[0003] Furthermore, in an X-ray tube, since the filament emits electrons, the shape, size, installation position, and tilt angle of the filament relative to the anode target directly affect the shape and size of the focal spot, which are factors that directly affect the quality of X-ray inspection.

[0004] Traditional filament adjustment relies on assembly technicians who manually adjust it using tools such as tweezers and small hammers. The drawbacks of this manual adjustment method are: it heavily depends on the skill level of the technicians, resulting in low efficiency, easy damage and strain to the filament, difficulty in controlling precision, and uncontrollable yield and efficiency. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a filament detection and adjustment system and method suitable for cathode head assembly, which can accurately measure the height of the filament relative to the cathode head by touch reminder, and can accurately adjust the height of the filament relative to the cathode head. It is convenient to operate, efficient in operation, and low in manufacturing cost.

[0006] To solve the above-mentioned technical problems, the present invention provides a filament detection and adjustment system suitable for a cathode head assembly. The cathode head assembly includes a cathode head and an electron-generating filament assembly. The filament assembly includes a filament component and a support rod made of a conductive metal material. The support rod is connected to and supported by the filament component and passes through the cathode head so that the filament component is in clearance fit with the cathode head. The filament detection and adjustment system includes:

[0007] Benchmark platform;

[0008] The filament fine-tuning device includes a support frame, a cathode head retainer, and a support rod lifter. The support frame is slidably mounted on a reference platform. The cathode head retainer is located on the top of the support frame to detachably fix the cathode head to the support frame. The support rod lifter is located on the support frame to drive the support rod to move up and down.

[0009] The height detection device includes an overhead adjustment frame and a precision displacement detector. The overhead adjustment frame is installed on a reference platform, and the precision displacement detector is installed on the overhead adjustment frame.

[0010] The touch reminder circuit contains the displacement precision detector, the cathode head assembly, and the filament fine-tuning device connected in series. The touch reminder circuit is used to remind the operator whether the displacement precision detector has touched the cathode head or the filament assembly.

[0011] Preferably, the support rod lifter includes a fixed frame mounted on the support frame, a sliding frame slidably mounted on the fixed frame, a lifting adjuster for adjusting the sliding distance of the sliding frame, and a support rod clamp mounted on the sliding frame.

[0012] Preferably, the lifting adjuster includes an adjusting screw and a threaded hole structure that are threaded together, the adjusting screw being rotatably mounted on a fixed frame, and the threaded hole structure being formed on a sliding frame.

[0013] Preferably, the support rod holder includes a clamping mounting bracket with a tapered constraint through hole, a clamping knob threaded to the maximum diameter portion of the constraint through hole, and a clamping tube disposed in the constraint through hole. The cavity of the clamping tube is used to insert the support rod, one end of the clamping tube abuts against the clamping knob, and the other end of the clamping tube is conical.

[0014] Preferably, the clamping tube has multiple slits on its conical end to form a circumferential array of multiple clamping claws.

[0015] Preferably, the clamping fitting is made of a ferromagnetic material, and the clamping knob is made of a magnetic material and has a blind-hole for inserting the clamping fitting.

[0016] Preferably, the cathode head retainer includes a clamping plate that presses against the edge of the cathode head and fasteners that secure the clamping plate to the support frame.

[0017] Preferably, the overhead adjustment frame includes a support column and a cantilever beam. The support column is set on the reference platform, one end of the cantilever beam is slidably set on the support column through a clamping structure, and the other end of the cantilever beam has an installation connection part for installing a precision displacement detector.

[0018] Preferably, the touch reminder circuit includes two conductive clips, with an alarm and a power supply connected in series between the two conductive clips via a wire. One conductive clip is held in place by the overhead adjustment frame, and the other conductive clip is held in place by the support frame.

[0019] The present invention also provides an adjustment method using the aforementioned filament detection and adjustment system for cathode head assemblies, comprising the following steps:

[0020] The cathode head is horizontally fixed to the top of the support frame by the cathode head retainer, so that the support rod lifter clamps the support rod.

[0021] The height of the displacement precision detector is adjusted by the overhead adjustment frame until it touches the reminder circuit and sends a reminder signal, indicating that the measuring head of the displacement precision detector has touched the top end face of the cathode head, and the scale of the displacement precision detector is returned to zero.

[0022] Adjust the displacement precision detector to raise its measuring head until it is higher than the height of the filament; move the support frame horizontally so that the filament is below the measuring head, then lower the measuring head of the displacement precision detector until it touches the reminder circuit and sends a reminder signal again, indicating that the measuring head of the displacement precision detector has touched the filament, and record the height measurement value of the displacement precision detector.

[0023] Calculate the difference between the measured height of the filament component and the standard height value;

[0024] The height of the support rod is adjusted by the support rod lifter to adjust the height of the filament relative to the top end face of the cathode head until the measured height of the filament is equal to the standard height value.

[0025] The support rod and cathode head are welded together to fix the height of the filament component relative to the top end face of the cathode head. The adjustment is then complete.

[0026] As described above, the filament detection and adjustment system and method for cathode head assemblies of the present invention have the following beneficial effects: A reference platform is used to bear the entire weight of the remaining parts of the filament detection and adjustment system excluding the reference platform. The filament fine-tuning device includes a support frame, a cathode head holder, and a support rod lifter; in use, the support frame can be moved horizontally on the reference platform, allowing the cathode head or filament to be positioned below the displacement precision detector; the cathode head holder is located on the top of the support frame, allowing the cathode head to be detachably fixed to the support frame, facilitating downward contact of the displacement precision detector with the top end face of the cathode head, and facilitating adjustment of the position of the support rod relative to the cathode head; the support rod lifter is located on the support frame, driving the support rod to move up and down, thereby adjusting the position of the filament relative to the cathode head. The height detection device includes an overhead adjustment frame and a displacement precision detector. The overhead adjustment frame is located on the reference platform, and the displacement precision detector is located on the overhead adjustment frame. With this arrangement, the height of the displacement precision detector relative to the reference platform changes under the adjustment of the overhead adjustment frame. Since the micrometer is a common precision displacement detector, it can function as such in actual operation. The measuring head of the micrometer can contact the top end face of the cathode head or the filament component downwards, thereby detecting the height H of the filament component relative to the top end face of the cathode head. Furthermore, the filament detection and adjustment system of this invention has a significant innovation: the touch reminder circuit sequentially connects the aforementioned precision displacement detector, cathode head assembly, and filament fine-tuning device. Because the precision displacement detector, cathode head assembly, and filament fine-tuning device are all made of conductive materials, when the precision displacement detector touches the cathode head or filament component, the touch reminder circuit is in a closed state. The touch reminder circuit can send a reminder signal to the operator, thus reminding them that the measuring head of the precision displacement detector has touched the cathode head or filament component, preventing the measuring head from excessively pressing down on the cathode head or filament component, avoiding damage to the cathode head or filament component during detection and adjustment, and ensuring the accuracy of filament height detection. Therefore, the filament detection and adjustment system of the present invention for cathode head assembly accurately measures the height of the filament relative to the cathode head by means of touch reminder, and can accurately adjust the height of the filament relative to the cathode head. It is convenient to operate, efficient in operation, and low in manufacturing cost. Attached Figure Description

[0027] Figure 1 Shown is a partial cross-sectional view of the cathode head assembly of the present invention;

[0028] Figure 2 The diagram shown is a perspective view of the filament detection and adjustment system for cathode head assemblies according to the present invention.

[0029] Figure 3Shown is a partial cross-sectional view of the filament detection and adjustment system for cathode head assemblies according to the present invention;

[0030] Figure 4 Displayed as Figure 3 Enlarged view of section A;

[0031] Figure 5 Shown is a cross-sectional view of the support rod lifter;

[0032] Figure 6 This is a schematic diagram of the touch alert loop.

[0033] Component designation explanation

[0034] 1. Cathode head assembly

[0035] 11 Cathode head

[0036] 111 Cathode head body

[0037] 112 Connecting pipe

[0038] 12 Filament Assembly

[0039] 121 Filament component

[0040] 122 Support rod

[0041] 2. Baseline Platform

[0042] 3. Filament fine-tuning device

[0043] 31 Support frame

[0044] 32 Cathode head retainer

[0045] 321 Pressure Plate

[0046] 322 Fasteners

[0047] 33 Support rod lifter

[0048] 331 Fixture

[0049] 332 Sliding Frame

[0050] 333 Lifting Adjuster

[0051] 333a Adjusting screw

[0052] 333b Threaded Hole Structure

[0053] 334 Support rod clamp

[0054] 334a Clamping Mount

[0055] 334b constrained through hole

[0056] 334c Clamping Knob

[0057] 334d clamping fitting

[0058] 334e Clamp Claw

[0059] 334f blind slot card holder

[0060] 4. Height detection device

[0061] 41. Overhead Adjustment Frame

[0062] 411 Support Column

[0063] 412 Cantilever Beam

[0064] 413 Clamping Structure

[0065] 42 Precision Displacement Detector

[0066] 421 Measuring Head

[0067] 5. Touch reminder circuit

[0068] 51 Conductive clamp

[0069] 52 wires

[0070] 53 Alarm Device

[0071] 54 power supply Detailed Implementation

[0072] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0073] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0074] like Figure 1As shown, the cathode head assembly 1 of the present invention includes a cathode head 11 and a filament assembly 12 for generating electrons. The filament assembly 12 includes a filament member 121 and a support rod 122 made of a conductive metal material. The support rod 122 is connected to and supported by the filament member 121 and passes through the cathode head 11 so that the filament member 121 is in clearance fit with the cathode head 11. Specifically, the support rod 122 can be a molybdenum rod. The cathode head 11 includes a cathode head body 111 and a connecting tube 112 disposed on the cathode head body 111. The cathode head body 111 can be integrally formed, and the connecting tube 112 can be a nickel tube that allows the support rod 122 to pass through. When the support rod 122 moves relative to the cathode head 11 along its own axis, the filament member 121 moves with the support rod 122, thereby changing the position (position or orientation) of the filament member 121 relative to the cathode head 11.

[0075] like Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 As shown, the present invention provides a filament detection and adjustment system suitable for cathode head assemblies, comprising:

[0076] Baseline platform 2;

[0077] The filament fine-tuning device 3 includes a support frame 31, a cathode head retainer 32, and a support rod lifter 33. The support frame 31 is slidably mounted on the reference platform 2. The cathode head retainer 32 is located on the top of the support frame 31 to detachably fix the cathode head 11 to the support frame 31. The support rod lifter 33 is located on the support frame 31 to drive the support rod 122 to move up and down.

[0078] The height detection device 4 includes an overhead adjustment frame 41 and a displacement precision detector 42. The overhead adjustment frame 41 is installed on the reference platform 2, and the displacement precision detector 42 is installed on the overhead adjustment frame 41.

[0079] The touch reminder circuit 5 is connected in series with the above-mentioned displacement precision detector 42 (e.g., a micrometer screw gauge, generally called a micrometer head), cathode head assembly 1, and filament fine adjustment device 3. The touch reminder circuit 5 is used to remind the staff whether the above-mentioned displacement precision detector 42 touches the cathode head 11 or filament 121.

[0080] In this invention, the reference platform 2 is used to support the entire weight of the remaining parts of the filament detection and adjustment system, excluding the reference platform 2. The filament fine-tuning device 3 includes a support frame 31, a cathode head holder 32, and a support rod lifter 33. In use, the support frame 31 can be translated on the reference platform 2, so that the cathode head 11 or filament component 121 is located below the displacement precision detector 42. The cathode head holder 32 is located on the top of the support frame 31, so that the cathode head 11 can be detachably fixed to the support frame 31, thereby facilitating the downward contact of the displacement precision detector 42 with the top end face of the cathode head 11 and facilitating the adjustment of the position of the support rod 122 relative to the cathode head 11. The support rod lifter 33 is located on the support frame 31, so that the support rod 122 can be driven to move up and down, thereby adjusting the position of the filament component 121 relative to the cathode head 11.

[0081] The aforementioned height detection device 4 includes an overhead adjustment frame 41 and a displacement precision detector 42. The overhead adjustment frame 41 is mounted on the reference platform 2, and the displacement precision detector 42 is mounted on the overhead adjustment frame 41. With this configuration, the height of the displacement precision detector 42 relative to the reference platform 2 will change under the adjustment of the overhead adjustment frame 41. Since a micrometer (commonly called a micrometer head) is a common displacement precision detector 42, in actual operation, the function of the displacement precision detector 42 can be achieved through a micrometer. The measuring head 421 of the micrometer can contact the top end face of the cathode head 11 or the filament 121 downwards, thereby detecting the height H of the filament 121 relative to the top end face of the cathode head 11. Furthermore, the filament detection and adjustment system of the present invention has another important innovation: the touch reminder circuit 5 is connected in series with the aforementioned displacement precision detector 42, cathode head assembly 1, and filament fine-tuning device 3. Since the displacement precision detector 42, cathode head assembly 1, and filament fine-tuning device 3 are all made of conductive materials, when the aforementioned displacement precision detector 42 touches the cathode head 11 or filament 121, the touch reminder circuit 5 is in a closed state. The touch reminder circuit 5 can send a reminder signal (light or sound) to the operator, thereby reminding the operator that the measuring head 421 of the aforementioned displacement precision detector 42 has touched the cathode head 11 or filament 121, avoiding excessive downward pressure of the measuring head 421 on the cathode head 11 or filament 121, preventing damage to the cathode head 11 or filament 121 during the detection and adjustment process, and ensuring the accuracy of the height detection of the filament 121. Therefore, the filament detection and adjustment system of the present invention for cathode head assembly accurately measures the height of filament 121 relative to cathode head 11 by means of touch reminder, and can accurately adjust the height of filament 121 relative to cathode head 11. It is convenient to operate, efficient in operation, and low in manufacturing cost.

[0082] like Figure 3 , Figure 4 as well as Figure 5 As shown, the aforementioned support rod lifter 33 includes a fixed frame 331 mounted on the support frame 31, a sliding frame 332 slidably mounted on the fixed frame 331, a lifting adjuster 333 for adjusting the sliding distance of the sliding frame 332, and a support rod holder 334 mounted on the sliding frame 332. Under the adjustment of the lifting adjuster 333, the sliding frame 332 changes height relative to the fixed frame 331. Since the support rod holder 334 and the sliding frame 332 move synchronously, under the adjustment of the lifting adjuster 333, the support rod holder 334 changes height relative to the fixed frame 331, thereby driving the support rod 122 to move axially up and down, thus adjusting the height of the filament 121 relative to the cathode head 11, and enabling better control of the positional accuracy of the filament 121.

[0083] Furthermore, such as Figure 4 and Figure 5 As shown, to more precisely adjust the upward and downward sliding accuracy of the sliding frame 332, the lifting adjuster 333 includes an adjusting screw 333a and a threaded hole structure 333b that are threaded together. The adjusting screw 333a is rotatably mounted on the fixed frame 331, and the threaded hole structure 333b is formed in the sliding frame 332. Specifically, the lifting adjuster 333 is similar to a lead screw and nut mechanism. By adjusting the forward and reverse rotation of the adjusting screw 333a, the upward or downward movement of the sliding frame 332 is adjusted.

[0084] like Figure 4 and Figure 5As shown, to facilitate clamping the support rod 122, the support rod holder 334 includes a clamping mounting bracket 334a with a tapered constraint through hole 334b, a clamping knob 334c threaded to the maximum diameter portion of the constraint through hole 334b, and a clamping tube 334d disposed in the constraint through hole 334b. The cavity of the clamping tube 334d is used to insert the support rod 122. One end of the clamping tube 334d abuts against the clamping knob 334c, and the other end of the clamping tube 334d is conical. In use, when the clamping knob 334c is rotated in a preset rotation direction, the length of the clamping knob 334c extending into the constraint through hole 334b ​​gradually increases. When the clamping knob 334c is pressed, the clamping tube 334d gradually moves towards the smallest diameter portion of the constraint through hole 334b. Because the constraint through hole 334b ​​is tapered, the portion of the clamping tube 334d through which the support rod 122 passes is gradually subjected to pressure from the hole wall of the constraint through hole 334b, causing the upper diameter of the clamping tube 334d to decrease, thus clamping the support rod 122. Conversely, when the clamping knob 334c is rotated in the opposite direction to the preset rotation direction, the clamping knob 334c and the clamping tube 334d reset, thereby releasing the support rod 122. Furthermore, the conical end of the clamping tube 334d has multiple slits forming a circumferential array of clamping claws 334e, which makes it easier for the upper diameter of the clamping tube 334d to decrease or return to its original size.

[0085] To prevent the clamping tube 334d from getting stuck in the tapered portion of the constraint through hole 334b, the clamping tube 334d is made of a ferromagnetic material, and the clamping knob 334c is made of a magnetic material and has a blind hole 334f that allows the clamping tube 334d to be inserted. With this configuration, when the clamping knob 334c is rotated in a direction opposite to the preset rotation direction, the clamping knob 334c can pull the clamping tube 334d back, thereby releasing the clamping tube 334d from the support rod 122.

[0086] like Figure 4 As shown, to facilitate the clamping of the cathode head 11, the cathode head retainer 32 includes a clamping plate 321 that presses against the edge of the cathode head 11 and a fastener 322 that secures the clamping plate 321 to the support frame 31. Specifically, the clamping plate 321 has clearance holes to expose the top end face of the cathode head 11 and the filament assembly 12. The fastener 322 may be a fastening screw.

[0087] like Figure 2 and Figure 3As shown, to simplify the structure of the aforementioned overhead adjustment frame 41, the overhead adjustment frame 41 includes a support column 411 and a cantilever beam 412. The support column 411 is located on the reference platform 2. One end of the cantilever beam 412 is slidably mounted on the support column 411 via a clamping structure 413, and the other end of the cantilever beam 412 has a mounting connection for mounting a precision displacement detector 42. When the clamping structure 413 is loosened, the cantilever beam 412 can move up and down; when the clamping structure 413 is tightened, the cantilever beam 412 is in a fixed state.

[0088] like Figure 3 and Figure 6 As shown, to facilitate the installation and removal of the aforementioned touch alert circuit 5, the touch alert circuit 5 includes two conductive clips 51. An alarm 53 and a power supply 54 are connected in series between the two conductive clips 51 via a wire 52. One conductive clip 51 is clamped to the overhead adjustment frame 41, and the other conductive clip 51 is clamped to the support frame 31. The alarm 53 can be a buzzer or an indicator light.

[0089] In addition, the aforementioned reference platform 2 is cut from marble slabs, which improves the stability of the reference platform 2.

[0090] The present invention also provides an adjustment method using the above-described filament detection and adjustment system suitable for cathode head assemblies, comprising the following steps:

[0091] The cathode head 11 is horizontally fixed to the top of the support frame 31 by the cathode head retainer 32, so that the support rod lifter 33 clamps the support rod 122.

[0092] The height of the displacement precision detector 42 is adjusted by the above-mentioned overhead adjustment frame 41 until it touches the reminder circuit 5 and sends a reminder signal, indicating that the measuring head 421 of the displacement precision detector 42 has touched the top end face of the cathode head 11, and the scale of the displacement precision detector 42 is returned to zero.

[0093] Adjust the displacement precision detector 42 to raise the measuring head 421 of the displacement precision detector 42 until the measuring head 421 is higher than the height of the filament 121; move the support frame 31 horizontally so that the filament 121 is below the measuring head 421, and then lower the measuring head 421 of the displacement precision detector 42 until it touches the reminder circuit 5 and issues a reminder signal again, indicating that the measuring head 421 of the displacement precision detector 42 has touched the filament 121, and record the height measurement value of the displacement precision detector 42;

[0094] Calculate the difference between the measured height of the filament component 121 and the standard height value;

[0095] Adjust the height of the support rod 122 by adjusting the height of the filament 121 relative to the top end face of the cathode head 11 using the support rod lifter 33, until the measured height of the filament 121 is equal to the standard height value.

[0096] Weld the aforementioned support rod 122 and cathode head 11 to fix the height of the filament component 121 relative to the top end face of the cathode head 11, and the adjustment is complete.

[0097] The adjustment method of the present invention can accurately measure the height of the filament component 121 relative to the cathode head 11 by means of touch reminder, and can precisely adjust the height of the filament component 121 relative to the top end face of the cathode head 11. It is convenient to operate and efficient in operation.

[0098] like Figure 1 As shown, specifically, position B indicates the spot weld location between the connecting pipe 112 of the cathode head 11 and the support rod 122. After spot welding, the excessive length of the support rod 122 is cut off.

[0099] In summary, this invention provides a filament detection and adjustment system and method for cathode head assemblies. It can accurately measure the height of the filament relative to the cathode head through touch-based alerts and precisely adjust this height. The system is convenient to operate, highly efficient, and has low manufacturing costs. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and possesses high industrial applicability.

[0100] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A filament detection and adjustment system for a cathode head assembly, the cathode head assembly (1) comprising a cathode head (11) and an electron-generating filament assembly (12), the filament assembly (12) comprising a filament element (121) and a support rod (122) made of a conductive metal material, the support rod (122) being connected to and supported by the filament element (121) and passing through the cathode head (11) so that the filament element (121) is in clearance fit with the cathode head (11), characterized in that, The filament detection and adjustment system includes: Benchmark platform (2); The filament fine-tuning device (3) includes a support frame (31), a cathode head retainer (32), and a support rod lifter (33). The support frame (31) is slidably mounted on the reference platform (2). The cathode head retainer (32) is located on the top of the support frame (31) to detachably fix the cathode head (11) to the support frame (31). The support rod lifter (33) is located on the support frame (31) to drive the support rod (122) to move up and down. The support rod lifter (33) includes a fixed frame (331) on the support frame (31), a sliding frame (332) slidably mounted on the fixed frame (331), a lifting adjuster (333) for adjusting the sliding distance of the sliding frame (332), and a support on the sliding frame (332). The rod holder (334) includes a clamping mounting bracket (334a) having a tapered constraint through hole (334b), a clamping knob (334c) threaded to the maximum diameter portion of the constraint through hole (334b), and a clamping tube (334d) disposed in the constraint through hole (334b). The cavity of the clamping tube (334d) is used to insert the support rod (122). One end of the clamping tube (334d) abuts against the clamping knob (334c), and the other end of the clamping tube (334d) is conical. The clamping tube (334d) is made of ferromagnetic material, and the clamping knob (334c) is made of magnetic material and has a blind hole (334f) that allows the clamping tube (334d) to be inserted. The height detection device (4) includes an overhead adjustment frame (41) and a displacement precision detector (42). The overhead adjustment frame (41) is located on the reference platform (2), and the displacement precision detector (42) is located on the overhead adjustment frame (41). The touch reminder circuit (5) is connected in series with the displacement precision detector (42), the cathode head assembly (1) and the filament fine adjustment device (3). The touch reminder circuit (5) is used to remind the staff whether the displacement precision detector (42) touches the cathode head (11) or the filament (121).

2. The filament detection and adjustment system for cathode head assemblies according to claim 1, characterized in that: The lifting adjuster (333) includes an adjusting screw (333a) and a threaded hole structure (333b) that are threaded together. The adjusting screw (333a) is rotatably mounted on the fixed frame (331) and the threaded hole structure (333b) is formed on the sliding frame (332).

3. The filament detection and adjustment system for cathode head assemblies according to claim 1, characterized in that: The clamping tube (334d) has multiple slits on its conical end to form a circumferential array of multiple clamping claws (334e).

4. The filament detection and adjustment system for cathode head assemblies according to claim 1, characterized in that: The cathode head retainer (32) includes a clamping plate (321) that presses against the edge of the cathode head (11) and a fastener (322) that secures the clamping plate (321) to the support frame (31).

5. The filament detection and adjustment system for cathode head assemblies according to claim 1, characterized in that: The overhead adjustment frame (41) includes a support column (411) and a cantilever beam (412). The support column (411) is located on the reference platform (2). One end of the cantilever beam (412) is slidably mounted on the support column (411) via a clamp structure (413). The other end of the cantilever beam (412) has an installation connection for mounting a precision displacement detector (42).

6. The filament detection and adjustment system for cathode head assemblies according to claim 1, characterized in that: The touch reminder circuit (5) includes two conductive clips (51), and an alarm (53) and a power supply (54) are connected in series between the two conductive clips (51) by a wire (52). One conductive clip (51) is clamped to the overhead adjustment frame (41), and the other conductive clip (51) is clamped to the support frame (31).

7. An adjustment method for a filament detection and adjustment system suitable for a cathode head assembly as described in any one of claims 1 to 6, characterized in that, Includes the following steps: The cathode head (11) is horizontally fixed to the top of the support frame (31) by the cathode head retainer (32), so that the support rod lifter (33) clamps the support rod (122). Adjust the height of the displacement precision detector (42) by means of the overhead adjustment frame (41) until it touches the reminder circuit (5) to issue a reminder signal, indicating that the measuring head (421) of the displacement precision detector (42) has touched the top end face of the cathode head (11), and the scale of the displacement precision detector (42) is returned to zero. Adjust the displacement precision detector (42) to raise the measuring head (421) of the displacement precision detector (42) until the measuring head (421) is higher than the height of the filament (121); move the support frame (31) horizontally so that the filament (121) is below the measuring head (421), and then lower the measuring head (421) of the displacement precision detector (42) until the reminder circuit (5) is triggered again to issue a reminder signal, indicating that the measuring head (421) of the displacement precision detector (42) has touched the filament (121), and record the height measurement value of the displacement precision detector (42); Calculate the difference between the measured height of the filament component (121) and the standard height value; The height of the support rod (122) is adjusted by the support rod lifter (33) to adjust the height of the filament (121) relative to the top end face of the cathode head (11) until the height measurement of the filament (121) is equal to the standard height value. Weld the support rod (122) and the cathode head (11) to fix the height of the filament component (121) relative to the top end face of the cathode head (11), and the adjustment is complete.

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