Small-aperture thread milling cutter convenient for chip removal

Abstract

The utility model belongs to the technical field of thread milling cutters, particularly relates to a small-aperture thread milling cutter convenient for chip removal, and provides the following scheme aiming at the problem that chips and dust enter after punching is finished in the prior art: the small-aperture thread milling cutter comprises a clamping rod, a cutter bar is fixed at the bottom end of the clamping rod, and a cutter body is connected below the cutter bar; a cleaning mechanism is arranged outside the cutter bar; the cleaning mechanism comprises a sleeve, the sleeve is arranged outside the cutter bar and the cutter body in a sleeving mode, and a storage battery is embedded in the upper portion of the outer wall of the sleeve. The sleeve covers the cutter bar and the cutter body, splashing of chippings, dust and the like is avoided during punching, meanwhile, air circulation is accelerated through an exhaust fan embedded in the installation shell, and the heat dissipation effect is achieved; and the air is exhausted, the chippings, dust and the like slide down, the chippings, the dust and the like are collected, and the situation that after punching is completed, the chippings, the dust and the like enter holes, and use is affected is avoided.

Description

Technical Field

[0001] This utility model relates to a thread milling cutter, specifically a thread milling cutter for small-diameter hole machining that facilitates chip removal, and belongs to the field of thread milling cutter technology. Background Technology

[0002] Thread milling technology is increasingly widely used in mechanical manufacturing, which has promoted the development of the industry. When applying thread milling, attention should be paid to the appropriate workpiece shape, the favorable processing scheme, and the reliable thread milling cutter. Only by comprehensively applying thread milling technology can the advantages of thread milling be fully utilized and results achieved. Thread milling cutters are especially used when machining and drilling small-diameter holes.

[0003] In the prior art, such as the thread milling cutter for machining small-diameter threaded holes disclosed in CN215091155U, which facilitates chip removal, the eccentric turntable drives the rotating column to rotate through the connecting plate, and the rotating column drives the threaded strip to rotate. During the operation, the chips generated are discharged through the chip removal groove, which facilitates chip removal. At the same time, the cleaning parts inside the sliding groove extend outward due to the centrifugal force to clean the chips that have not been discharged.

[0004] However, in implementing the relevant technology, it was found that the thread end mill designed above for machining small-diameter threaded holes with easy chip removal has the following problems: In the prior art, chips and dust are discharged through chip removal grooves, but in actual use, chips and dust will accumulate around the drilling site. After drilling is completed and the thread end mill is pulled out, they may enter the hole, which may affect the use of the hole. In view of this, a thread end mill for machining small-diameter holes with easy chip removal is provided to overcome the above defects. Utility Model Content

[0005] This invention addresses the problem that after drilling, the thread milling cutter may enter the hole and potentially affect its use by pulling it out. It provides a small-diameter thread milling cutter that facilitates chip removal.

[0006] The present invention achieves the above objectives through the following technical solution: a thread milling cutter for small-diameter machining that facilitates chip removal, comprising a clamping rod, a cutter shank fixed at the bottom end of the clamping rod, and a cutter body connected below the cutter shank, and a cleaning mechanism provided on the outside of the cutter shank;

[0007] The cleaning mechanism includes a sleeve that is fitted over the outside of the blade rod and the blade body. A battery is embedded in the upper part of the outer wall of the sleeve. A mounting shell is embedded in one side of the lower part of the outer wall of the sleeve, and an exhaust fan is embedded inside the mounting shell. A connecting shell is installed in the other side of the lower part of the outer wall of the sleeve, and a guide plate is fixed inside the connecting shell. A filter screen is embedded in the outer wall of the connecting shell.

[0008] As a further improvement of this utility model: the sleeve and the tool holder form a rotating structure, and the sleeve is detachably connected to the connecting shell by bolts.

[0009] As a further improvement of this utility model: a limiting groove is provided above the outer sleeve of the tool holder, and an abutting mechanism is provided inside the limiting groove.

[0010] As a further embodiment of this utility model: the abutting mechanism includes a sliding frame, which is slidably connected inside the limiting groove, and a sliding plate is fixed at the position where the sliding frame extends out of the limiting groove.

[0011] As a further embodiment of this utility model: the abutting mechanism further includes a support rod, which extends through the interior of the sliding frame, and springs are sleeved at both ends of the support rod extending through the sliding frame.

[0012] As a further improvement of this utility model: a support mechanism is provided above the sleeve, the support mechanism includes a sliding groove, the sliding groove is opened at the top of the sleeve, and a connecting rod extends out from the inside of the sleeve.

[0013] As a further improvement of this utility model: the load-bearing mechanism also includes a universal wheel, which is installed at one end of the connecting rod that passes through the sliding groove, and a sleeve block is fixed at the bottom of the sliding plate corresponding to the position of the connecting rod.

[0014] The beneficial effects of this utility model are as follows: By covering the outside of the blade rod and blade body with a sleeve, debris and dust are prevented from splashing during drilling. At the same time, the exhaust fan embedded in the mounting shell accelerates air circulation, achieving a heat dissipation effect and blowing debris and dust into the connecting shell. The debris and dust are then guided to the filter screen by the guide plate, and the debris and dust slide off as the gas is discharged, thus collecting the debris and dust and preventing it from entering the hole after drilling and affecting its use. The support rod fixed inside the blade rod supports the sliding frame and slides along the limiting groove on the blade rod. Under the elastic extension and contraction of the spring, the sliding plate presses against the sleeve to prevent misalignment or displacement. The elastic contraction of the spring leaves enough space for the blade body to penetrate the hole, preventing the sliding plate and sleeve from being limited. The sleeve engages with the connecting rod through the opened sliding groove. The connecting rod slides stably along the sliding groove through the universal wheel. The top of the connecting rod passes through the sleeve block, which can improve the stability between the sleeve and the sliding plate and prevent displacement and shaking. At the same time, the universal wheel improves the smoothness of the sliding plate following the rotation of the blade rod. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the sleeve structure of this utility model;

[0017] Figure 3This is a schematic diagram of the guide plate structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the limiting groove structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the sliding plate structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the universal wheel structure of this utility model.

[0021] In the diagram: 1. Clamping rod; 2. Blade holder; 3. Blade body; 4. Cleaning mechanism; 401. Sleeve; 402. Mounting housing; 403. Exhaust fan; 404. Connecting housing; 405. Guide plate; 406. Filter screen; 407. Battery; 5. Limiting groove; 6. Abutting mechanism; 601. Sliding frame; 602. Sliding plate; 603. Support rod; 604. Spring; 7. Loading mechanism; 701. Sliding groove; 702. Connecting rod; 703. Caster wheel; 704. Sleeve block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0023] like Figures 1 to 6As shown, a thread milling cutter for small-diameter machining with easy chip removal includes a clamping rod 1, a cutter shank 2 fixed to the bottom end of the clamping rod 1, a cutter body 3 connected to the bottom of the cutter shank 2, and a cleaning mechanism 4 provided outside the cutter shank 2. The cleaning mechanism 4 includes a sleeve 401, which is sleeved on the outside of the cutter shank 2 and the cutter body 3. A battery 407 is embedded in the upper part of the outer wall of the sleeve 401. A mounting shell 402 is embedded in one side of the lower part of the outer wall of the sleeve 401. An exhaust fan 403 is embedded inside the mounting shell 402. A connecting shell 404 is installed in the other side of the lower part of the outer wall of the sleeve 401. A guide plate 40 is fixed inside the connecting shell 404. 5. A filter screen 406 is embedded in the outer wall of the connecting shell 404. The sleeve 401 and the cutter bar 2 form a rotating structure. The sleeve 401 is detachably connected to the connecting shell 404 by bolts. The sleeve 401 covers the outside of the cutter bar 2 and the cutter body 3 to prevent debris and dust from splashing during drilling. At the same time, the exhaust fan 403 embedded in the mounting shell 402 accelerates air circulation to achieve heat dissipation and blows debris and dust into the connecting shell 404. The debris and dust are then guided to the filter screen 406 for filtration by the guide plate 405. The debris and dust slide off as the gas is discharged, and the debris and dust are collected to prevent them from entering the hole after drilling and affecting the use. Example 2

[0024] In addition to all the technical features in Embodiment 1, this embodiment also includes: a limiting groove 5 is provided above the outer sleeve 401 of the tool holder 2, and an abutment mechanism 6 is provided inside the limiting groove 5. The abutment mechanism 6 includes a sliding frame 601, which is slidably connected inside the limiting groove 5. A sliding plate 602 is fixed at the position where the sliding frame 601 protrudes from the limiting groove 5. The abutment mechanism 6 also includes a support rod 603, which protrudes from the interior of the sliding frame 601. Springs 604 are sleeved at both ends of the support rod 603 protruding from the sliding frame 601. The support rod 603 fixed inside the tool holder 2 supports the sliding frame 601 and slides along the limiting groove 5 on the tool holder 2. Under the elastic extension and contraction of the spring 604, the sliding plate 602 presses against the sleeve 401 to avoid misalignment or displacement. The elastic contraction of the spring 604 reserves the distance for the tool body 3 to be drilled and inserted, preventing the sliding plate 602 and the sleeve 401 from being limited. Example 3

[0025] In addition to all the technical features in Embodiment 1, this embodiment also includes: a support mechanism 7 is provided above the sleeve 401. The support mechanism 7 includes a sliding groove 701, which is opened at the top of the sleeve 401. A connecting rod 702 extends through the inside of the sleeve 401. The support mechanism 7 also includes a universal wheel 703, which is installed at the end of the connecting rod 702 that enters the sliding groove 701. A sleeve block 704 is fixed at the bottom of the sliding plate 602 corresponding to the position of the connecting rod 702. The sleeve 401 engages with the connecting rod 702 through the sliding groove 701. The connecting rod 702 slides stably along the sliding groove 701 through the universal wheel 703. The top of the connecting rod 702 enters the sleeve block 704, which can improve the stability between the sleeve 401 and the sliding plate 602 and avoid deviation and shaking. At the same time, the universal wheel 703 improves the smoothness of the sliding plate 602 following the rotation of the tool holder 2.

[0026] Working principle: The thread milling cutter consists of a clamping rod 1, a cutter shank 2, and a cutter body 3. The clamping rod 1 is used to connect to the power end. The sleeve 401 is fitted over the cutter shank 2 and cutter body 3, covering the drilling area. During drilling, the exhaust fan 403 embedded in the mounting housing 402 improves airflow and heat dissipation, allowing debris and dust to enter the connecting housing 404 through the guide plate 405. After being filtered by the filter screen 406, the debris and dust are collected and blocked by the guide plate 405 to prevent diffusion. The connecting housing 404 is disassembled and cleaned later. The system is powered by a rechargeable battery 40. 7 provides power to the exhaust fan 403. The sliding frame 601, via the support rod 603 along the limiting groove 5, allows the sliding plate 602 to slide along the cutter bar 2 and abut against the sleeve 401. After the punching cutter body 3 penetrates the object, the spring 604 elastically extends and retracts, allowing the sliding plate 602 to press against the sleeve 401. The connecting rod 702 engages with the sliding groove 701 and passes through the sleeve block 704 when the sliding plate 602 presses against the sleeve 401, preventing the sliding plate 602 and the sleeve 401 from shifting. At the same time, the universal wheel 703 improves the smoothness of the rotation process of the cutter bar 2.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A thread milling cutter for machining small-diameter holes with easy chip removal, comprising a clamping rod (1), characterized in that: The bottom end of the clamping rod (1) is fixed with a knife bar (2), and a knife body (3) is connected to the bottom of the knife bar (2). A cleaning mechanism (4) is provided on the outside of the knife bar (2). The cleaning mechanism (4) includes a sleeve (401), which is sleeved on the outside of the blade (2) and the blade body (3). A battery (407) is embedded on the upper part of the outer wall of the sleeve (401). A mounting shell (402) is embedded on one side of the lower part of the outer wall of the sleeve (401), and an exhaust fan (403) is embedded inside the mounting shell (402). A connecting shell (404) is installed on the other side of the lower part of the outer wall of the sleeve (401), and a guide plate (405) is fixed inside the connecting shell (404). A filter screen (406) is embedded on the outer wall of the connecting shell (404). A support mechanism (7) is provided above the sleeve (401). The support mechanism (7) includes a sliding groove (701) which is located at the top of the sleeve (401).

2. The thread milling cutter for small-diameter machining with easy chip removal according to claim 1, characterized in that: The sleeve (401) and the tool holder (2) form a rotating structure, and the sleeve (401) is detachably connected to the connecting shell (404) by bolts.

3. The thread milling cutter for small-diameter machining with easy chip removal according to claim 1, characterized in that: A limiting groove (5) is provided above the outer sleeve (401) of the tool holder (2), and an abutment mechanism (6) is provided inside the limiting groove (5).

4. A thread milling cutter for small-diameter machining with easy chip removal according to claim 3, characterized in that: The abutment mechanism (6) includes a sliding frame (601), which is slidably connected inside the limiting groove (5), and a sliding plate (602) is fixed at the position where the sliding frame (601) passes through the limiting groove (5).

5. A thread milling cutter for small-diameter machining with easy chip removal according to claim 4, characterized in that: The abutment mechanism (6) further includes a support rod (603), which extends through the interior of the sliding frame (601), and springs (604) are sleeved at both ends of the support rod (603) extending through the sliding frame (601).

6. A thread milling cutter for small-diameter machining with easy chip removal according to claim 5, characterized in that: A connecting rod (702) extends through the inside of the sleeve (401).

7. A thread milling cutter for machining small-diameter holes with easy chip removal according to claim 6, characterized in that: The load-bearing mechanism (7) also includes a caster wheel (703), which is installed at one end of the connecting rod (702) that passes through the sliding groove (701). A sleeve block (704) is fixed at the bottom of the sliding plate (602) corresponding to the position of the connecting rod (702).

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