Numerical control gang drill with secondary supercharging device

Abstract

The utility model discloses a numerical control gang drill with a secondary supercharging device, and relates to the technical field of numerical control gang drill supercharging devices. The numerical control gang drill with the secondary pressurizing device comprises a pressurizing air cylinder body which is arranged above an air cylinder body of the numerical control gang drill and fixedly connected with the air cylinder body, a support body is arranged at the top of the pressurizing air cylinder body, partition plates are arranged in the support body and used for stretching and retracting of a pressurizing rod, and pressurizing pipes communicated with the pressurizing rod are arranged in the partition plates. The pressurizing rod is provided with a range extending piece, a sealing gasket is welded to the pressurizing pipe, and the pressurizing pipe is provided with an adjusting valve element used for adjusting in a limiting mode. The pressurizing mode of the pressurizing rod on the numerical control gang drill is improved into an air pressure and hydraulic pressure mode, abutting and direct contact of the piston rods are avoided, so that the situations of blow-by and the like caused by abrasion between the piston rods are avoided, braking resistance is reduced through stable filling of oil of the air-liquid pressurizing part, and drilling rod springback is avoided. The drilling speed is not limited, and the normal magnitude of thrust is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control gang drill boosting devices, in particular to a numerical control gang drill with a secondary boosting device. Background Technique

[0002] With the development of technology, the numerical control gang drill used in woodworking centers has also developed from the traditional manual gang drill to the numerical control gang drill. The manual gang drill has low efficiency, high labor cost, and is time-consuming and laborious; the numerical control gang drill has high efficiency, low labor cost, automatic operation, saves labor, improves production efficiency, realizes automated processing, and one person can manage three devices.

[0003] Since the downward thrust of the drill bit during the drilling process is provided by air pressure, under the condition of a certain air pressure, the larger the diameter of the cylinder, the greater the thrust that can be provided. However, due to the limitation of the gang drill space, the diameter of the cylinder cannot be infinitely enlarged, which limits the drilling speed. At the same time, due to insufficient thrust, the drilling finish is not high and the waviness is large.

[0004] As disclosed in a numerical control gang drill with a secondary boosting device, the publication number of which is CN206465201U, this numerical control gang drill forms a secondary progressive boosting mechanism by adding a boosting device on the basis of the numerical control gang drill, and uses compressed air to provide a secondary boosting boost for the drill rod on the gang drill body, increasing the downward thrust, eliminating the rebound of the drill bit during drilling, further improving the working ability of the gang drill, thus greatly improving the working efficiency, saving labor costs, and improving the precision of part processing. And it can completely replace the numerical control gang drill, and can carry out technical transformation on the basis of the original structure of the ordinary numerical control row without changing the original structure, realize large torque transmission, improve productivity and production efficiency, and promote the overall development of the numerical control gang drill towards large torque and automation.

[0005] The above device realizes the rod boost by compressed air to achieve secondary boosting. Therefore, first of all, the device needs to be in an absolutely sealed state. Then, during the process of the compressed air realizing the rod propulsion, due to the cancellation of the abutting state between the boosting piston rod and the piston rod, it may cause the boosting piston rod and the piston rod to collide and wear for a long time, causing air leakage between the upper and lower sides of the piston of the piston rod, further causing the split pin to fall off and the piston rod to be misaligned. Eventually, it may cause the piston rod not to move, resulting in the failure of secondary boosting. Content of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the utility model provides a numerical control gang drill with a secondary boosting device, which solves the problems put forward in the above background technique.

[0007] To achieve the above objectives, the present utility model is realized through the following technical solutions: A numerically controlled gang drill with a secondary supercharging device includes a supercharging cylinder body fixedly connected above the cylinder body of the numerically controlled gang drill. A support body is provided at the top of the supercharging cylinder body. A notch for the telescopic movement of a pressure rod is formed inside the support body. Partition plates are provided on both sides of the bottom end of the pressure rod. A supercharging pipe communicating with the pressure rod is introduced into the partition plates. A detachable extension member is installed in the middle of the pressure rod. The top of the pressure rod is connected to a gas-liquid supercharging member through a sealing member. A sealing pad that enables the one-way flow of oil is welded on the supercharging pipe. A regulating valve core for adjustment is installed on the supercharging pipe in a limited manner. A side pipe with the other end key-connected to an adjustment disk is introduced into the regulating valve core. The adjustment disk abuts against the regulating valve core; the supercharging method of the pressure rod for the numerically controlled gang drill is improved to be through the methods of air pressure and hydraulic pressure, avoiding the abutment and direct contact of the piston rod, thereby avoiding the occurrence of problems such as wear between the piston rods resulting in air leakage, etc. Moreover, the stable perfusion of the oil in the gas-liquid supercharging member reduces the braking resistance. While avoiding the rebound of the drill rod, it does not restrict the drilling speed and ensures the normal magnitude of the thrust. Preferably, the abutment of the regulating valve core and the adjustment disk ensures the stability of the regulating valve core in controlling the oil perfusion. At the same time, the mobility of the regulating valve core ensures that the hydraulic module can adapt to the supercharging cylinder bodies connected to numerically controlled gang drills of different models and sizes.

[0008] A further improvement of the technical solution of the present utility model lies in that: A liquid supercharging pipe with the other end connected to a pressure regulating valve is introduced into the top of the regulating valve core. The other end of the pressure regulating valve is communicated with a plunger pump installed with a high-pressure plunger inside the gas-liquid supercharging member through a liquid supercharging pipe. The direct connection between the plunger pump and the pressure regulating valve enables the hydraulic pressure of the plunger pump to be directly controlled by the pressure regulating valve. Further, the direct connection between the liquid supercharging pipe and the regulating valve core ensures that there will be no backflow and other situations when the hydraulic oil enters the oil cavity formed by the partition plate and the pressure rod, guaranteeing the smooth progress of the secondary supercharging.

[0009] A further improvement of the technical solution of the present utility model lies in that: The gas-liquid supercharging member further includes a displacement pump connected to the plunger pump and located at the top of the pressure rod. A diaphragm for pressurization is provided inside the displacement pump. The displacement pump is installed on the top of the support body in a limited manner. The displacement pump causes the diaphragm to expand, squeezing the air inside the pressure rod. At this time, the diaphragm bulges, and the pressure rod further compresses the numerically controlled gang drill connected to the bottom of the pressure rod in the vertical direction.

[0010] A further improvement of the technical solution of the present utility model lies in that: The extension member includes an external thread provided on the outer wall of the pressure rod and a compression sleeve threadedly connected to the pressure rod. The compression sleeve is installed in a limited manner at the top of the housing where a pneumatic regulating valve is installed. Since there are differences in the size, length, etc. of the supercharging cylinder bodies connected to different numerically controlled gang drills, therefore, to ensure the smooth conduction and adaptation of the air pressure module, the compression sleeve is threadedly connected to the middle of the pressure rod, and the intermediate components and regulating components of the pneumatic regulating valve adjust the air pressure and connect the rod body.

[0011] A further improvement of the technical solution of the present utility model lies in that: the bottom of the pressure rod is connected to an inlet part for compressed hydraulic oil and compressed air.

[0012] A further improvement of the technical solution of the present utility model lies in that: the inside of the partition is hollow, and the partition is connected to the pressure rod and the inlet part.

[0013] Beneficial effects

[0014] The present utility model provides a numerically controlled gang drill with a secondary pressurization device. Compared with the prior art, it has the following beneficial effects:

[0015] 1. For the numerically controlled gang drill with a secondary pressurization device, the pressurization method of the numerically controlled gang drill through the pressure rod is improved to a pneumatic and hydraulic method, avoiding the abutment and direct contact of the piston rod, thereby avoiding the occurrence of problems such as wear between the piston rods resulting in air leakage, and the stable perfusion of the hydraulic oil of the pneumatic-hydraulic pressurization component reduces the braking resistance. While avoiding the rebound of the drill rod, it does not restrict the drilling speed and ensures the normal magnitude of the thrust.

[0016] 2. For the numerically controlled gang drill with a secondary pressurization device, through the direct connection of the plunger pump and the pressure regulating valve, the hydraulic pressure of the plunger pump can be directly controlled by the pressure regulating valve. Further, the direct connection of the liquid pressurization pipe and the regulating valve core ensures that there is no backflow or other situations when the hydraulic oil enters the oil cavity formed by the partition and the pressure rod, ensuring the smooth progress of the secondary pressurization. Description of the drawings

[0017] Figure 1 is the left view of the present utility model;

[0018] Figure 2 is the schematic diagram of the whole of the present utility model;

[0019] Figure 3 is the structural schematic diagram of the pneumatic-hydraulic pressurization component of the present utility model;

[0020] Figure 4 is the structural diagram of the connection between the displacement pump and the plunger pump of the present utility model.

[0021] In the figure: 1. Cylinder block; 101a. Bracket body; 101a-1. Pressure rod; 101a-2. Partition; 101a-3. Pressurization pipe; 101a-4. Inlet part;

[0022] 101a-3a. Sealing gasket; 101a-3b. Regulating valve core; 101a-3c. Adjusting disc; 101a-3d. Side pipe; 101a-3e. Pressure regulating valve; 101a-3f. Liquid pressurization pipe;

[0023] 2. Extended-range component; 201. External thread; 202. Compression sleeve; 203. Pneumatic control valve; 204. Outer shell;

[0024] 3. Gas-liquid supercharging component; 301. Plunger pump; 302. Positive-displacement pump; Specific implementation manner

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Refer to Figures 1-4 The present utility model provides 3 technical solutions:

[0027] Embodiment 1:

[0028] A numerically controlled gang drill with a secondary supercharging device includes a supercharging cylinder block 1 fixedly connected above the cylinder block of the numerically controlled gang drill. A support body 101a is arranged at the top of the supercharging cylinder block 1. A notch for the telescopic movement of the pressure rod 101a-1 is provided inside the support body 101a. Partition plates 101a-2 are arranged on both sides of the bottom end of the pressure rod 101a-1. A supercharging pipe 101a-3 communicating with the pressure rod 101a-1 is introduced into the partition plates 101a-2. An extended-range component 2 is detachably installed in the middle of the pressure rod 101a-1, and the top of the pressure rod 101a-1 is connected with a gas-liquid supercharging component 3 through a sealing member 1;

[0029] A sealing gasket 101a-3a that enables the one-way flow of oil is welded on the supercharging pipe 101a-3. A control valve core 101a-3b for adjustment is installed in a limited position on the supercharging pipe 101a-3. A side pipe 101a-3d whose other end is key-connected to an adjustment disk 101a-3c is introduced into the control valve core 101a-3b, and the adjustment disk 101a-3c abuts against the control valve core 101a-3b.

[0030] Among them, in this embodiment, the supercharging method of the pressure rod 101a-1 for the numerically controlled gang drill is improved to be through air pressure and hydraulic pressure, avoiding the abutment and direct contact of the piston rod, thereby avoiding the occurrence of situations such as wear between the piston rods resulting in air leakage, etc. And the stable perfusion of the oil in the gas-liquid supercharging component 3 reduces the braking resistance, avoids the rebound of the drill rod, and does not restrict the drilling speed while ensuring the normal magnitude of the thrust;

[0031] Preferably, the abutment between the regulating valve core 101a-3b and the regulating disc 101a-3c ensures the stability of the regulating valve core 101a-3b in controlling the oil injection. At the same time, the mobility of the regulating valve core 101a-3b ensures that the hydraulic module can adapt to the supercharging cylinder blocks 1 connected to numerically controlled drilling machines of different models and sizes.

[0032] Embodiment 2:

[0033] Based on Embodiment 1: A liquid supercharging pipe 101a-3f with the other end connected to a pressure regulating valve 101a-3e is introduced into the top of the regulating valve core 101a-3b. The other end of the pressure regulating valve 101a-3e is connected to a plunger pump 301 with a high-pressure plunger installed inside the gas-liquid supercharging member 3 through the liquid supercharging pipe 101a-3f.

[0034] In this embodiment, the direct connection between the plunger pump 301 and the pressure regulating valve 101a-3e enables the pressure regulating valve 101a-3e to directly control the hydraulic pressure of the plunger pump 301. Further, the direct connection between the liquid supercharging pipe 101a-3f and the regulating valve core 101a-3b prevents situations such as backflow when hydraulic oil enters the oil chamber formed by the partition 101a-2 and the pressure rod 101a-1, ensuring the smooth progress of secondary supercharging.

[0035] The gas-liquid supercharging member 3 further includes a displacement pump 302 connected to the plunger pump 301 and located at the top of the pressure rod 101a-1. A diaphragm for pressurization is provided inside the displacement pump 302, and the displacement pump 302 is limit-mounted on the top of the support body 101a.

[0036] In this embodiment, the displacement pump 302 causes the diaphragm to expand, squeezing the air inside the pressure rod 101a-1. At this time, the diaphragm bulges, and the pressure rod 101a-1 further compresses the numerically controlled drilling machine connected to the bottom of the pressure rod 101a-1 in the vertical direction.

[0037] Embodiment 3:

[0038] Based on Embodiments 1 and 2: The extension member 2 includes an external thread 201 provided on the outer wall of the pressure rod 101a-1 and a compression sleeve 202 threadedly connected to the pressure rod 101a-1. The compression sleeve 202 is limit-mounted at the top of a housing 204 in which a pneumatic regulating valve 203 is installed.

[0039] As can be seen from the above, since there are differences in the size, length, etc. of the supercharging cylinder blocks 1 connected to different numerically controlled drilling machines, in order to ensure the smooth conduction and adaptation of the pneumatic module, the compression sleeve 202 is threadedly connected to the middle of the pressure rod 101a-1, and the pneumatic regulating valve 203 adjusts the air pressure and connects the rod body through the intermediate and regulating components.

[0040] The bottom of the pressure rod 101a-1 is connected to an inlet part 101a-4 for compressed hydraulic fluid and compressed air. The inside of the partition plate 101a-2 is hollow, and the partition plate 101a-2 is connected to the pressure rod 101a-1 and the inlet part 101a-4.

[0041] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0042] During use, after the booster cylinder block 1 is installed on the numerical control drilling cylinder block, the abutment of the regulating valve core 101a-3b and the regulating disc 101a-3c ensures the stability of the regulating valve core 101a-3b controlling the hydraulic fluid perfusion. At this time, the plunger pump 301 and the positive displacement pump 302 are started. At this time, the positive displacement pump 302 causes the diaphragm to expand, squeezing the air inside the pressure rod 101a-1. At this time, the diaphragm bulges, and the pressure rod 101a-1 further compresses the numerical control drilling connected to the bottom of the pressure rod 101a-1 in the vertical direction. Correspondingly, the hydraulic fluid enters the oil cavity formed by the partition plate 101a-2 and the pressure rod 101a-1 for secondary pressurization.

[0043] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CNC drilling machine with a secondary booster device, comprising a booster cylinder body (1) fixedly connected to the top of the CNC drilling cylinder body, characterized in that: A support body (101a) is arranged at the top of the boost cylinder body (1), a recess for the boost rod (101a-1) to be retracted is provided in the support body (101a), partitions (101a-2) are arranged on both sides of the bottom end of the boost rod (101a-1), a boost pipe (101a-3) connected to the boost rod (101a-1) is passed through the partition (101a-2), a detachable range extender (2) is installed in the middle of the boost rod (101a-1), and a gas-liquid booster (3) is connected to the top of the boost rod (101a-1) via a sealing member; A sealing gasket (101a-3a) is welded on the boost pipe (101a-3) and is connected to enable oil to flow in one direction. The boost pipe (101a-3) is limitedly installed with a regulating valve core (101a-3b) for adjustment. A side pipe (101a-3d) having the other end key-connected to the regulating disk (101a-3c) is passed through the regulating valve core (101a-3b). The regulating disk (101a-3c) is in abutment with the regulating valve core (101a-3b).

2. The CNC drilling machine with secondary pressure boosting device according to claim 1, characterized in that: A liquid boosting pipe (101a-3f) whose other end is connected to a pressure regulating valve (101a-3e) is passed through the top of the regulating valve core (101a-3b); the other end of the pressure regulating valve (101a-3e) is connected to a plunger pump (301) with a high-pressure plunger installed in the gas-liquid boosting component (3) through the liquid boosting pipe (101a-3f).

3. The CNC drilling machine with secondary pressure boosting device according to claim 2, characterized in that: The gas-liquid booster (3) also includes a displacement pump (302) connected to the plunger pump (301) and located at the top of the booster rod (101a-1); a diaphragm for boosting pressure is provided inside the displacement pump (302), and the displacement pump (302) is limitedly mounted on the top of the bracket body (101a).

4. The CNC drilling machine with secondary pressure boosting device according to claim 3, characterized in that: The range extender (2) comprises an external thread (201) arranged on the outer wall of the pressure rod (101a-1) and a pressing sleeve (202) threadedly connected to the pressure rod (101a-1), and the pressing sleeve (202) is limitedly arranged at the top of the housing (204) in which the pneumatic regulating valve (203) is installed.

5. The CNC drilling machine with secondary pressure boosting device according to claim 1, characterized in that: The bottom of the pressure rod (101a-1) is connected to an inlet portion (101a-4) for compressed oil and compressed air.

6. The CNC drilling machine with secondary pressure boosting device according to claim 5, characterized in that: The interior of the partition (101a-2) is hollow, and the partition (101a-2) is in communication with the pressure rod (101a-1) and the inlet portion (101a-4).

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