Air-feed radial drilling equipment

Abstract

The present invention discloses a pneumatic feed radial drilling device, which solves the following technical problems: the existing radial blind hole processing on the inner wall of the cylinder body mentioned in the background technology is still relatively difficult, and the electric spark processing has the limitations of low efficiency and poor precision. When the hole diameter is small, the processing is more difficult. The technical solution adopted is a pneumatic feed radial drilling device, including a driving motor, a base, a cross bar, a drill head and a pneumatic feeding mechanism for pushing the drill head to feed. The driving motor is arranged on one side of the base, and the motor shaft of the driving motor is connected to one end of the cross bar. The cross bar is arranged on the other side of the base, and the other end of the cross bar is connected to the drill head. Advantages: This equipment adopts compressed air to control the feed, and the radial drilling equipment has a simple structure. Each gear structure in the drill head is simple and there is no overlapping installation, so that the diameter of the drill head and the cross bar can be made relatively small, which is convenient for processing small and deep inner wall radial blind holes.

Description

Technical Field

[0001] The invention relates to a pneumatic feeding type radial drilling device, belonging to the technical field of mechanical processing. Background Art

[0002] At present, the processing of radial blind holes is still relatively difficult. It is mainly carried out by open processing from the outside and then blocking welding. It can also be carried out by methods such as electrospark machining, but electrospark machining has limitations such as low efficiency and poor precision. When the hole diameter is small, processing is more difficult.

[0003] Some existing mechanical processing methods are mainly used for processing blind holes on the inner wall of shallow holes; due to the use of special ultra-short drills, the drill life is short. The processing of radial blind holes on the inner wall of cylinder bodies is still in the exploratory stage. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the processing of the radial blind hole mentioned in the background technology is relatively difficult. It is mainly carried out by open processing from the outside and then blocking welding. It can also be carried out by methods such as electrospark machining, but electrospark machining has limitations such as low efficiency and poor precision. When the hole diameter is small, the processing becomes more difficult.

[0005] To solve the above problems, the technical solution adopted by the present invention is:

[0006] A pneumatic feed type radial drilling device, comprising a driving motor (100), a base (200), a crossbar (300), a drill head (400) and a pneumatic feed mechanism for pushing the drill head to feed, wherein the driving motor (100) is arranged on one side of the base (200), a motor shaft of the driving motor (100) is connected to one end of the crossbar (300) via a coupling (101), the crossbar (300) is arranged on the other side of the base (200), and the other end of the crossbar (300) is connected to the drill head (400);

[0007] The crossbar portion (300) comprises a hollow crossbar (301) with a flange (303) at one end, the flange (303) being connected to the base (200), a transmission shaft (302) being arranged in the hollow crossbar (301), both ends of the transmission shaft (302) being rotatably supported on the hollow crossbar (301), the right end of the transmission shaft (302) being connected to the coupling (101) via a key (305), and a driving bevel gear (304) being arranged at the left end of the transmission shaft (302);

[0008] The drill head (400) comprises a drill housing (401), the right end of the drill housing (401) being connected to the other end of the hollow crossbar (301); an opening for accommodating a driving bevel gear (304) is provided in a concave manner at the right end of the drill housing (401); a driven bevel gear (412) meshing with the driving bevel gear (304) is provided in the drill housing (401); the driven bevel gear (412) is loosely sleeved on a fixed shaft (411), and the fixed shaft (411) is interference-formed in the drill housing (401). The first vertical blind hole (401-2) is provided in the drill housing (401); the axis of the fixed shaft (411) is arranged perpendicular to the axis of the drill housing (401); a first cylindrical gear (413) is arranged in an empty sleeve on the fixed shaft (411); the first cylindrical gear (413) and the driven bevel gear (412) are integrated into a double gear; an intermediate gear (422) is arranged in the drill housing (401) and meshes with the first cylindrical gear (413); the intermediate gear (422) is empty sleeved on the intermediate shaft (421); the intermediate shaft (42 1) An interference fit is arranged in a second vertical blind hole (401-3) in a drill housing (401), and the axis of the intermediate shaft (421) is arranged perpendicular to the axis of the drill housing (401); a second cylindrical gear (432) is arranged in the drill housing (401) and meshes with the intermediate gear (422); the second cylindrical gear (432) is fixedly connected to the upper part of the drill (431); the upper part of the drill (431) is respectively connected to the upper and lower parts of the second cylindrical gear (432) through the first bearing (435) The drill bit (431) is rotatably disposed in a third vertical blind hole (401-4) in a drill bit housing (401) and a second bearing (434); the drill bit (431) can slide up and down along the third vertical blind hole (401-4); a sliding sleeve (433) is disposed between the drill bit (431) and the hole wall of the third vertical blind hole (401-4); a drill bit reset air intake spacing (401-5) is disposed between the sliding sleeve (433) and the second bearing (434); and the axis of the drill bit (431) is disposed perpendicularly to the axis of the drill bit housing (401);

[0009] The pneumatic feeding mechanism comprises: a first drill bit feeding air inlet channel (306) and a first drill bit resetting air inlet channel (313) are arranged on the rod body of the hollow cross bar (301) along the axial direction of the hollow cross bar (301), and the first drill bit feeding air inlet channel (306) and the first drill bit resetting air inlet channel (313) are not connected; a drill bit feeding air inlet port (312) and a drill bit resetting air inlet port (314) are arranged on the hollow cross bar (301) respectively corresponding to the first drill bit feeding air inlet channel (306) and the first drill bit resetting air inlet channel (313), a feeding air pipe joint (307) is arranged in the drill bit feeding air inlet port (312), and a resetting air pipe joint (308) is arranged in the drill bit resetting air inlet port (314); and a drill bit housing (401) is provided on the shell body corresponding to the first drill bit feeding air inlet channel (306) and the first drill bit resetting air inlet channel (313). A second drill bit feed air inlet channel (403) and a second drill bit reset air inlet channel (404) are provided; a drill bit feed air inlet blind hole (407) is provided at the bottom of the third vertical blind hole (401-4); the drill bit feed air inlet blind hole (407) is communicated with the second drill bit feed air inlet channel (403); a drill bit reset air inlet blind hole (408) is provided on the shell of the drill bit housing (401) parallel to the axial direction of the drill bit (431); the drill bit reset air inlet blind hole (408) is communicated with the second drill bit reset air inlet channel (404); a drill bit reset air inlet transition hole (406) is provided at the bottom of the drill bit reset air inlet blind hole (408) perpendicular to the axial direction of the drill bit (431); the drill bit reset air inlet transition hole (406) is communicated with the drill bit reset air inlet spacing (401-5); and a sealing plug (409) is provided at the orifice of the drill bit reset air inlet blind hole (408).

[0010] Preferably, a circle of positioning ring (303-1) is convexly provided on the installation end surface of the flange (303). The design of the positioning ring (303-1) facilitates the installation and positioning of the flange (303) and the base.

[0011] Preferably, a connecting portion (301-2) is provided inwardly on the outer surface of the other end of the hollow cross bar (301) to engage with the right end of the drill housing (401); the connecting portion (301-2) is inserted into the right end of the drill housing (401) and is fixedly connected by bolts; a sealing gasket is provided between the end surface of the connecting portion (301-2) and the end surface of the right end of the drill housing (401); and through holes are provided on the sealing gasket corresponding to the second drill feeding air inlet channel (403) and the second drill reset air inlet channel (404).

[0012] Preferably, the drill housing (401) comprises two symmetrically structured housings, the two housings being a left housing (401-1) and a right housing (402) respectively, and being fixedly connected by bolts. The symmetrically structured design of the two housings facilitates installation, disassembly and replacement of the drill.

[0013] Preferably, a chip receiving opening (405) is provided on the drill housing (401) at the periphery of the drill bit (431). The design of the chip receiving opening facilitates the discharge of iron chips during drilling, thus facilitating the drilling process of the hole.

[0014] The beneficial effects of the present invention are:

[0015] The pneumatic feed radial drilling equipment adopts compressed air to control the feed. The radial drilling equipment has a simple structure. Each gear structure in the drill head is simple and there is no overlapping installation, so that the diameter of the drill head and the cross bar can be made relatively small, which is convenient for processing small and deep inner wall radial blind holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a general diagram of the pneumatically fed radial drilling equipment.

[0017] Figure 2 It is a half-section view of a pneumatically fed radial drilling device.

[0018] Figure 3 It is a structural diagram of the drive motor and the base.

[0019] Figure 4 It is a cross-sectional view of the crossbar.

[0020] Figure 5 It is a cross-sectional view of the crossbar.

[0021] Figure 6 This is the appearance of the drill head.

[0022] Figure 7 It is a cross-sectional view of the drill head.

[0023] Figure 8 It is a schematic diagram of the left shell of the drill housing.

[0024] Fig. 9 It is a cross-sectional view of the side view of the drill head (reflecting the drill bit being reset into the channel). DETAILED DESCRIPTION

[0025] The technical solution of the present invention is described in detail below, but the protection scope of the present invention is not limited to the embodiments.

[0026] To make the content of the present invention more clearly understood, the following Figure 1-Figure 9 The specific implementation manner is further described.

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] like Figure 1 , 2 As shown in Figure 3, the pneumatic feed radial drilling equipment in this embodiment includes a pneumatic feed radial drilling equipment, including a driving motor 100, a base 200, a cross bar 300, a drill head 400 and a pneumatic feeding mechanism for pushing the drill head to feed. The driving motor 100 is arranged on one side of the base 200, and the motor shaft of the driving motor 100 is connected to one end of the cross bar 300 through a coupling 101. The cross bar 300 is arranged on the other side of the base 200, and the other end of the cross bar 300 is connected to the drill head 400; the driving motor 100 drives the transmission shaft 302 of the cross bar 300 to rotate through the coupling 101.

[0029] like Figure 4 and 5 As shown, the crossbar 300 includes a hollow crossbar 301 with a flange 303 at one end, the flange 303 is connected to the base 200 by bolts, and a circle of positioning ring 303-1 is convexly provided on the mounting end surface of the flange 303. The design of the positioning ring 303-1 facilitates the installation and positioning of the flange 303 and the base. A transmission shaft 302 is arranged in the hollow crossbar 301, and both ends of the transmission shaft 302 are rotatably supported on the hollow crossbar 301. The right end of the transmission shaft 302 is connected to the coupling 101 through a key 305, and the left end of the transmission shaft 302 is installed with a driving bevel gear 304 through a key or spline. The driving bevel gear 304 is meshed with the driven bevel gear 412 in the drill head 400.

[0030] The driving bevel gear 304 of the crossbar 300 meshes and rotates with the driven bevel gear 412 in the double gear, and transmits the power to the second cylindrical gear 432 through the first cylindrical gear 413 and the idle intermediate gear 422, thereby driving the drill bit 431 to rotate and cut.

[0031] like Figure 5 As shown, a connecting portion 301-2 which engages with the right end of the drill housing 401 is concavely arranged on the outer surface of the other end of the hollow cross bar 301, the connecting portion 301-2 is inserted into the right end of the drill housing 401 and is fixedly connected by bolts, a sealing gasket is arranged between the end face of the connecting portion 301-2 and the right end face of the drill housing 401, and through holes are arranged on the sealing gasket corresponding to the second drill feed air inlet channel 403 and the second drill reset air inlet channel 404.

[0032] like Figure 6 , 7As shown in , 8 and 9, the drill head 400 includes a drill housing 401, the right end of which is connected to the other end of the hollow cross bar 301; an opening for accommodating the active bevel gear 304 is provided in the right end of the drill housing 401, a driven bevel gear 412 meshing with the active bevel gear 304 is provided in the drill housing 401, the driven bevel gear 412 is loosely sleeved on the fixed shaft 411, the fixed shaft 411 is interference-set in the first vertical blind hole 401-2 in the drill housing 401, and the axis of the fixed shaft 411 is perpendicular to the axis of the drill housing 401; a first cylindrical gear 413 is loosely sleeved on the fixed shaft 411, and the first cylindrical gear 413 and the driven bevel gear 412 are integrated into a double gear; an intermediate gear 422 meshing with the first cylindrical gear 413 is provided in the drill housing 401, the intermediate gear 422 is loosely sleeved on the intermediate shaft 421, and the intermediate gear 422 is loosely sleeved on the intermediate shaft 421. The intermediate shaft 421 is interference-set in the second vertical blind hole 401-3 in the drill bit housing 401, and the axis of the intermediate shaft 421 is perpendicular to the axis of the drill bit housing 401; a second cylindrical gear 432 is arranged in the drill bit housing 401 to mesh with the intermediate gear 422, and the second cylindrical gear 432 is fixedly connected to the upper part of the drill bit 431. The upper part of the drill bit 431 is rotatably arranged in the third vertical blind hole 401-4 in the drill bit housing 401 above and below the second cylindrical gear 432 through the first bearing 435 and the second bearing 434 respectively. The drill bit 431 can slide up and down along the third vertical blind hole 401-4, a sliding sleeve 433 is arranged between the drill bit 431 and the hole wall of the third vertical blind hole 401-4, a drill bit reset air intake spacing 401-5 is arranged between the sliding sleeve 433 and the second bearing 434, and the axis of the drill bit 431 is perpendicular to the axis of the drill bit housing 401.

[0033] like Figure 6 As shown, the drill housing 401 includes two symmetrically structured housings, the two housings are respectively a left housing 401-1 and a right housing 402 and are fixedly connected by bolts. The design of the two symmetrically structured housings facilitates the installation, removal and replacement of the drill. A chip receiving opening 405 is provided on the drill housing 401 at the periphery of the drill 431. The design of the chip receiving opening facilitates the discharge of iron chips during drilling, and facilitates the drilling of holes.

[0034] like Figure 6 , 7As shown in , 8 and 9, the pneumatic feeding mechanism includes a first drill bit feeding air inlet channel 306 and a first drill bit reset air inlet channel 313 arranged on the rod body of the hollow cross bar 301 along the axial direction of the hollow cross bar 301, and the first drill bit feeding air inlet channel 306 and the first drill bit reset air inlet channel 313 are not connected; a drill bit feeding air inlet port 312 and a drill bit reset air inlet port 314 are arranged on the hollow cross bar 301 respectively corresponding to the first drill bit feeding air inlet channel 306 and the first drill bit reset air inlet channel 313, a feeding air pipe joint 307 is arranged in the drill bit feeding air inlet port 312, and a reset air pipe joint 308 is arranged in the drill bit reset air inlet port 314; on the shell of the drill bit housing 401, the first drill bit feeding air inlet channel 306 and the first drill bit reset air inlet channel 313 are arranged respectively. A second drill bit feed air inlet channel 403 and a second drill bit reset air inlet channel 404 are set at 313, and a drill bit feed air inlet blind hole 407 is set at the bottom of the third vertical blind hole 401-4, and the drill bit feed air inlet blind hole 407 is communicated with the second drill bit feed air inlet channel 403; a drill bit reset air inlet blind hole 408 is set on the shell of the drill bit housing 401 parallel to the axial direction of the drill bit 431, and the drill bit reset air inlet blind hole 408 is communicated with the second drill bit reset air inlet channel 404, and a drill bit reset air inlet transition hole 406 is set at the bottom of the drill bit reset air inlet blind hole 408 perpendicular to the axial direction of the drill bit 431, and the drill bit reset air inlet transition hole 406 is connected to the drill bit reset air inlet spacing 401-5, and a sealing plug 409 is set at the orifice of the drill bit reset air inlet blind hole 408.

[0035] The pneumatic feeding mechanism pushes the drill bit 431 to feed, and the high-pressure air is connected to the feed air pipe joint 307. The compressed air enters the top of the drill bit 431 through the first drill bit feed air inlet channel 306, the second drill bit feed air inlet channel 403 and the drill bit feed air inlet blind hole 407, pushing the drill bit 431, the first bearing 435 and the second bearing 434 to feed downward.

[0036] The pneumatic feeding mechanism pushes the drill bit 431 to reset, and the high-pressure air is connected to the reset air pipe joint 308. The compressed air enters the drill bit reset air intake distance 401-5 through the first drill bit reset air intake channel 313, the second drill bit reset air intake channel 404, the drill bit reset air intake blind hole 408 and the drill bit reset air intake transition hole 406, pushing the drill bit 431 to reset upward.

[0037] The pneumatically fed radial drilling equipment uses compressed air to control the feed. The radial drilling equipment has a simple structure. Each gear structure in the drill head 400 is very simple and there is no overlapping installation, so that the diameter of the drill head and the cross bar can be made relatively small, which is convenient for processing small and deep inner wall radial blind holes.

[0038] Anything not specifically described in the specification of the present invention is prior art or can be implemented by existing technology. It should be understood that for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A pneumatic feed radial drilling device, characterized in that: The invention comprises a driving motor (100), a base (200), a crossbar (300), a drill head (400), and a pneumatic feeding mechanism for pushing the drill head to feed, wherein the driving motor (100) is arranged on one side of the base (200), a motor shaft of the driving motor (100) is connected to one end of the crossbar (300) via a coupling (101), the crossbar (300) is arranged on the other side of the base (200), and the other end of the crossbar (300) is connected to the drill head (400); The crossbar portion (300) comprises a hollow crossbar (301) with a flange (303) at one end, the flange (303) being connected to the base (200), a transmission shaft (302) being arranged in the hollow crossbar (301), both ends of the transmission shaft (302) being rotatably supported on the hollow crossbar (301), the right end of the transmission shaft (302) being connected to the coupling (101) via a key (305), and a driving bevel gear (304) being arranged at the left end of the transmission shaft (302); The drill head (400) comprises a drill housing (401), the right end of the drill housing (401) being connected to the other end of the hollow crossbar (301); an opening for accommodating a driving bevel gear (304) is provided in a concave manner at the right end of the drill housing (401); a driven bevel gear (412) meshing with the driving bevel gear (304) is provided in the drill housing (401); the driven bevel gear (412) is loosely sleeved on a fixed shaft (411), and the fixed shaft (411) is interference-formed in the drill housing (401). The first vertical blind hole (401-2) is provided in the drill housing (401); the axis of the fixed shaft (411) is arranged perpendicular to the axis of the drill housing (401); a first cylindrical gear (413) is arranged in an empty sleeve on the fixed shaft (411); the first cylindrical gear (413) and the driven bevel gear (412) are integrated into a double gear; an intermediate gear (422) is arranged in the drill housing (401) and meshes with the first cylindrical gear (413); the intermediate gear (422) is empty sleeved on the intermediate shaft (421); the intermediate shaft (42 1) An interference fit is arranged in a second vertical blind hole (401-3) in a drill housing (401), and the axis of the intermediate shaft (421) is arranged perpendicular to the axis of the drill housing (401); a second cylindrical gear (432) is arranged in the drill housing (401) and meshes with the intermediate gear (422); the second cylindrical gear (432) is fixedly connected to the upper part of the drill (431); the upper part of the drill (431) is respectively connected to the upper and lower parts of the second cylindrical gear (432) through the first bearing (435) The drill bit (431) is rotatably disposed in a third vertical blind hole (401-4) in a drill bit housing (401) and a second bearing (434); the drill bit (431) can slide up and down along the third vertical blind hole (401-4); a sliding sleeve (433) is disposed between the drill bit (431) and the hole wall of the third vertical blind hole (401-4); a drill bit reset air intake spacing (401-5) is disposed between the sliding sleeve (433) and the second bearing (434); and the axis of the drill bit (431) is disposed perpendicularly to the axis of the drill bit housing (401); The pneumatic feeding mechanism comprises: a first drill bit feeding air inlet channel (306) and a first drill bit resetting air inlet channel (313) are arranged on the rod body of the hollow cross bar (301) along the axial direction of the hollow cross bar (301), and the first drill bit feeding air inlet channel (306) and the first drill bit resetting air inlet channel (313) are not connected; a drill bit feeding air inlet port (312) and a drill bit resetting air inlet port (314) are arranged on the hollow cross bar (301) respectively corresponding to the first drill bit feeding air inlet channel (306) and the first drill bit resetting air inlet channel (313), a feeding air pipe joint (307) is arranged in the drill bit feeding air inlet port (312), and a resetting air pipe joint (308) is arranged in the drill bit resetting air inlet port (314); and a drill bit housing (401) is provided on the shell body corresponding to the first drill bit feeding air inlet channel (306) and the first drill bit resetting air inlet channel (313). A second drill bit feed air inlet channel (403) and a second drill bit reset air inlet channel (404) are provided; a drill bit feed air inlet blind hole (407) is provided at the bottom of the third vertical blind hole (401-4); the drill bit feed air inlet blind hole (407) is communicated with the second drill bit feed air inlet channel (403); a drill bit reset air inlet blind hole (408) is provided on the shell of the drill bit housing (401) parallel to the axial direction of the drill bit (431); the drill bit reset air inlet blind hole (408) is communicated with the second drill bit reset air inlet channel (404); a drill bit reset air inlet transition hole (406) is provided at the bottom of the drill bit reset air inlet blind hole (408) perpendicular to the axial direction of the drill bit (431); the drill bit reset air inlet transition hole (406) is communicated with the drill bit reset air inlet spacing (401-5); and a sealing plug (409) is provided at the orifice of the drill bit reset air inlet blind hole (408).

2. The pneumatically fed radial drilling device according to claim 1, characterized in that: A circle of positioning ring (303-1) is convexly arranged on the mounting end surface of the flange (303).

3. The pneumatically fed radial drilling device according to claim 1, characterized in that: A connecting portion (301-2) is provided in a concave shape on the outer surface of the other end of the hollow cross bar (301) to engage with the right end of the drill housing (401). The connecting portion (301-2) is inserted into the right end of the drill housing (401) and is fixedly connected by bolts. A sealing gasket is provided between the end surface of the connecting portion (301-2) and the end surface of the right end of the drill housing (401). Through holes are provided on the sealing gasket corresponding to the second drill feeding air inlet channel (403) and the second drill reset air inlet channel (404).

4. The pneumatically fed radial drilling device according to claim 1, characterized in that: The drill housing (401) comprises two symmetrically structured housings, the two housings being a left housing (401-1) and a right housing (402) respectively, and being fixedly connected by bolts.

5. The pneumatically fed radial drilling device according to claim 1, characterized in that: A chip receiving opening (405) is provided on the drill housing (401) at the outer periphery of the drill (431).

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