Vertical drilling guide tool, vertical drilling machine and bar drilling device

Abstract

The present application belongs to the technical field of drilling equipment, and particularly relates to a vertical drilling guiding tool, a vertical drilling machine tool and a bar drilling device. The vertical drilling guiding tool comprises a fixed sleeve, a rotating sleeve and a positioning disc. The side wall of the fixed sleeve is provided with an air inlet hole and a liquid inlet hole. A plurality of bearings are arranged between the fixed sleeve and the rotating sleeve for the shaft rotation of the rotating sleeve. The fixed sleeve and the rotating sleeve have a passage therebetween. The side wall of the rotating sleeve is provided with a plurality of through holes. The positioning disc is used for positioning the center line of the bar on the axis of the rotating sleeve. The outer wall of the rotating sleeve and the inner wall of the positioning disc form an annular gap therebetween, effectively reducing the hard friction between the tool bar and the rotating sleeve and the vibration intensity of the tool bar, thereby reducing the tool bar wear and tear and improving the service life of the tool bar and the guiding tool. By assembling the vertical drilling guiding tool, the hard friction of the tool bar is reduced, and the tool bar can drill at a faster speed, greatly improving the production efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of drilling equipment, and particularly relates to a vertical drilling guide tool, a vertical drilling machine tool and a bar drilling device. BACKGROUND

[0002] The manufacturing of a screw sleeve or a screw nut generally uses a bar as raw material, processes an inner hole with a certain diameter on a drilling machine tool, processes threads in the inner hole, and then performs cutting and heat treatment processes.

[0003] At present, some drilling machine tools for bar drilling have a tool bar penetrating a guide tool to ensure stable drilling. Although the guide tool and the tool bar are in a clearance fit structure, the tool bar still vibrates and deviates when rotating, and hard friction occurs between the tool bar and the guide tool, which is more likely to cause damage to the tool bar and affect the service life of the tool bar and the guide tool. SUMMARY

[0004] The present application aims to solve the technical problem of providing a vertical drilling guide tool and a bar drilling device.

[0005] The vertical drilling guide tool provided by the present application comprises a fixed sleeve, an air inlet hole and a liquid inlet hole are arranged on the side wall of the fixed sleeve;

[0006] A rotating sleeve is arranged in the fixed sleeve, a plurality of bearings are arranged between the fixed sleeve and the rotating sleeve for axial rotation of the rotating sleeve, a channel is formed between the fixed sleeve and the rotating sleeve, and a plurality of through holes are arranged on the side wall of the rotating sleeve; and

[0007] A positioning disc is arranged on the top of the fixed sleeve, the center line of the bar is positioned on the axis of the rotating sleeve, and an annular gap is formed between the outer wall of the rotating sleeve and the inner wall of the positioning disc.

[0008] Optionally, the diameter of the annular gap gradually increases from top to bottom.

[0009] Optionally, the positioning disc comprises a support ring and a plurality of protrusions distributed circumferentially on the support ring, and the area enclosed by the plurality of protrusions is a bar positioning area.

[0010] Optionally, the part of the support ring below the area enclosed by the plurality of protrusions is an inner ring, and the top surface of the inner ring is higher than the top end of the rotating sleeve.

[0011] Optionally, one side of the protrusion close to the inner circle of the support ring is provided with an inclined arc surface and a circular arc surface below the inclined arc surface, and the circular arc surface is in contact with the side surface of the bar.

[0012] Optionally, the vertical drilling guide tool further comprises a blocking ring rigidly connected to the bottom end of the fixed sleeve, and a cavity with a diameter larger than the inner diameter of the rotating sleeve is arranged in the blocking ring.

[0013] Optionally, three bearings are sequentially sleeved on the outer periphery of the rotating sleeve, a spacer is arranged between two bearings and is close to the positioning disc, and the fixed sleeve, the rotating sleeve and the three bearings form a lap joint support structure.

[0014] The vertical drilling machine tool comprises the vertical drilling guiding tool, the linear reciprocating moving mechanism and the linear reciprocating clamp, the vertical drilling guiding tool and the linear reciprocating clamp are rigidly connected to the linear reciprocating moving mechanism, and the linear reciprocating clamp is located above the vertical drilling guiding tool.

[0015] Optionally, the linear reciprocating moving mechanism is provided with a fixing seat, the fixing seat is provided with a mounting hole, the mounting hole is aligned with the clamping center of the linear reciprocating clamp, and the vertical drilling guiding tool is arranged in the mounting hole.

[0016] The bar drilling device comprises the vertical drilling machine tool, a joint robot arranged on the front of the vertical drilling machine tool, a material conveying mechanism arranged on one side of the joint robot and a cooling liquid filtering and cooling device arranged on one side of the vertical drilling machine tool.

[0017] The vertical drilling guiding tool provided by the embodiment can limit the vibration amplitude of the tool bar, and when the tool bar rotates, the tool bar vibration contacts the rotating sleeve, drives the rotating sleeve to rotate in the fixed sleeve, the tool bar continuously rotates, the rotating sleeve can maintain the rotating speed, thereby effectively reducing the hard friction between the tool bar and the rotating sleeve and reducing the tool bar vibration intensity, so that the tool bar wear can be reduced and the service life of the tool bar and the guiding tool can be prolonged.

[0018] In addition, when the tool bar drills, iron filings are left on the rotating sleeve and the positioning disc, and in subsequent processing, the end of the bar body is abutted against the iron filings, which easily affects the positioning of the subsequent bar body, causes the drilled hole to deviate and affects the product quality. The fixed sleeve and the rotating sleeve are matched through the plurality of bearings to form a channel, and an annular gap is formed between the outer wall of the rotating sleeve and the inner wall of the positioning disc. After drilling is completed, compressed gas can be introduced into the channel through the gas inlet hole, and the compressed gas can enter the inner ring of the rotating sleeve through the through hole, so that the iron filings are blown out and the product quality is ensured. In addition, when drilling, cooling liquid can be introduced into the channel through the liquid inlet hole (at this time, the compressed gas is not introduced, and the gas inlet hole is connected with a check valve to prevent the cooling liquid from entering the gas pipe), the cooling liquid enters the channel, the annular gap and the inner ring of the rotating sleeve through the through hole, and is used for cooling and lubricating the tool bar.

[0019] The vertical drilling machine tool provided by the embodiment can effectively reduce the tool bar wear, prolong the service life of the tool bar, reduce the hard friction of the tool bar, and also enables the tool bar to drill at a faster rotating speed, thereby greatly improving the production efficiency.

[0020] The bar drilling device provided by the embodiment can take the bar from the material conveying mechanism by the articulated robot, and transfer the bar to the linear reciprocating clamp in the vertical drilling machine tool, and can also move the drilled bar from the linear reciprocating clamp and place the bar on the material conveying mechanism, so that the automation level of the processing of the screw sleeve and the screw cap is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A perspective view of the vertical drilling guiding tool provided by the present application is shown in the figure.

[0022] Figure 2 An enlarged view of the A area in the figure. Figure 1

[0023] Figure 3 A top view of the vertical drilling guiding tool provided by the present application is shown in the figure.

[0024] Figure 4 A-a sectional view of the figure. Figure 3

[0025] Figure 5 An enlarged view of the B area in the figure. Figure 4

[0026] A perspective view of the bar drilling device provided by the present application is shown in the figure. Figure 6

[0027] An enlarged view of the C area in the figure. Figure 7 Figure 6 A side view of the bar drilling device provided by the present application is shown in the figure.

[0028] Figure 8 An enlarged view of the D area in the figure.

[0029] Figure 9 Figure 8 The figure: 10, vertical drilling guiding tool; 11, fixed sleeve; 111, air inlet hole; 112, liquid inlet hole; 12, rotating sleeve; 121, through hole; 122, channel; 123, annular gap; 13, bearing; 131, spacer sleeve; 14, positioning disc; 141, support ring; 142, protruding block; 1421, inclined arc surface; 1422, circular arc surface; 143, inner ring; 144, annular groove; 15, stop ring; 151, outer ring; 152, inner ring; 153, cavity;

[0030] 20, vertical drilling machine tool; 21, linear reciprocating movement mechanism; 211, fixed seat; 22, linear reciprocating clamp; 23, rotating tool holder; 24, tool bar;

[0031] 20, vertical drilling machine tool; 21, linear reciprocating movement mechanism; 211, fixed seat; 22, linear reciprocating clamp; 23, rotating tool holder; 24, tool bar;

[0032] ​​​​30. Articulated robot; 40. Material handling mechanism; 41. Three-axis gantry robot; 42. Chain conveyor line; 43. Material rack; 50. Coolant filtration and cooling device; 60. Bar stock body. Detailed Implementation

[0033] like Figures 1-5 As shown, this embodiment of the invention provides a vertical drilling guide fixture, including: a fixed sleeve 11, a rotating sleeve 12 disposed within the fixed sleeve 11, and a positioning disk 14 disposed on the top of the fixed sleeve 11. The side wall of the fixed sleeve 11 is provided with an air inlet 111 and a liquid inlet 112. A plurality of bearings 13 are provided between the fixed sleeve 11 and the rotating sleeve 12 for the fixed-axis rotation setting of the rotating sleeve 12. A channel 122 is provided between the fixed sleeve 11 and the rotating sleeve 12. The side wall of the rotating sleeve 12 is provided with a plurality of through holes 121. The positioning disk 14 is used to position the center line of the bar stock on the axis of the rotating sleeve 12. An annular gap 123 is formed between the outer wall of the rotating sleeve 12 and the inner wall of the positioning disk 14.

[0034] Compared with the prior art, the vertical drilling guide fixture 10 provided in this embodiment can limit the vibration amplitude of the tool holder 24 through the inner hole of the rotating sleeve 12. When the tool holder 24 rotates, the vibration of the tool holder 24 comes into contact with the rotating sleeve 12, which will drive the rotating sleeve 12 to rotate within the fixed sleeve 11. As the tool holder 24 rotates continuously, the rotating sleeve 12 can maintain the rotation speed, thereby effectively reducing the hard friction between the tool holder 24 and the rotating sleeve 12, and reducing the vibration intensity of the tool holder 24. This can reduce the wear of the tool holder 24 and improve the service life of the tool holder 24 and the guide fixture.

[0035] In addition, when the tool holder 24 is drilling, it will leave iron filings on the rotating sleeve 12 and the positioning plate 14. In subsequent processing, the end of the bar body 60 will press against the iron filings, which can easily affect the positioning of the bar body 60 and cause the drilled hole to deviate, affecting the product quality. The fixed sleeve 11 and the rotating sleeve 12 of the present invention are connected by several bearings 13 to form a channel 122. An annular gap 123 is formed between the outer wall of the rotating sleeve 12 and the inner wall of the positioning plate 14. After drilling is completed, compressed gas can be introduced through the air inlet 111, and the compressed gas can enter the inner ring of the rotating sleeve 12 through the through hole 121, thereby blowing out the iron filings and ensuring the quality of the product. Coolant can also be introduced through the inlet hole 112 during drilling (at this time, compressed gas is not introduced, and the air inlet hole 111 is connected to a check valve to prevent coolant from entering the air pipe). The coolant enters the channel 122, the annular gap 123, and enters the inner ring of the rotating sleeve 12 through the through hole 121 for cooling and lubrication of the tool holder 24.

[0036] It should be noted that most of the metal chips generated during drilling are discharged through the tool holder 24.

[0037] In this embodiment, asFigure 5 As shown, the diameter of the annular gap 123 gradually increases from top to bottom.

[0038] Specifically, the upper end side wall of the rotating sleeve 12 is designed as a conical surface, the inner wall of the positioning disc 14 is designed as an inverted conical surface, after the positioning disc 14 is fixed on the end of the fixed sleeve 11 by bolts, the outer wall of the rotating sleeve 12 and the inner wall of the positioning disc 14 form an annular gap 123, the annular gap 123 is in the shape of a conical cylinder, the compressed gas passes through the gap between the top end of the fixed sleeve 11 and the bearing 13, and finally is sprayed out from the annular gap 123, so that the direction of the gas flow is towards the center of the rotating sleeve 12, and the gas flow sprayed out from the center hole of the rotating sleeve 12 can quickly remove the iron filings on the rotating sleeve 12, and the cross impact gas flow can remove the iron filings on the positioning disc 14 (the iron filings on the positioning disc 14 are relatively less).

[0039] In this embodiment, the positioning disc 14 includes a support ring 141 and a plurality of protrusions 142 distributed circumferentially on the support ring 141, and the area enclosed by the plurality of protrusions 142 is a bar positioning area.

[0040] Specifically, the support ring 141 and the protrusions 142 can be a split structure, and the two are fixed by bolts or welding, or the support ring 141 and the protrusions 142 can be an integral structure formed by machining, the number of the protrusions 142 is not uniquely limited, the support ring 141 is coaxially arranged with the rotating sleeve 12, the bar abuts against the support ring 141, the outer wall of the bar is in clearance fit with the protrusions 142, and there can be a slight interference fit, so as to ensure that the center line of the bar coincides with the axis of the rotating sleeve 12, and reduce the vibration of the bar during drilling, thereby improving the product quality; in addition, the space between adjacent protrusions 142 can be used for blowing out iron filings. The size of the positioning disc 14 can be replaced according to different specifications of the bar.

[0041] Further, the side of the protrusion 142 close to the inner ring of the support ring 141 is provided with an inclined arc surface 1421 and a circular arc surface 1422 located below the inclined arc surface 1421, and the circular arc surface 1422 is in abutment with the side surface of the bar. In this way, the inclined arc surface 1421 provides a guiding effect, and the circular arc surface 1422 plays a role in limiting and reducing the vibration of the bar.

[0042] In this embodiment, the part of the support ring 141 below the area enclosed by the plurality of protrusions 142 is an inner ring 143, and the top surface of the inner ring 143 is higher than the top end of the rotating sleeve 12, so that the compressed gas sprayed out from the annular gap 123 can more easily blow away the iron filings on the rotating sleeve 12.

[0043] Further, the inner ring 143 is provided with an annular groove 144 for installing a sealing ring, and when the bar abuts against the top end of the rotating sleeve 12, the bar is in interference fit with the sealing ring, thereby effectively preventing the overflow of the cooling liquid.

[0044] In this embodiment, the vertical drilling guide tool 10 further comprises a retaining ring 15 rigidly connected to the bottom end of the fixed sleeve 11, and the retaining ring 15 is provided with a cavity 153 with a diameter larger than the inner diameter of the rotating sleeve 12. In this way, the retaining ring 15 is in clearance fit with the tool bar 24, and the retaining ring 15 can reduce the compressed gas sprayed from the bottom end of the vertical drilling guide tool 10, and most of the compressed gas is used to blow away iron filings; during the drilling process, a small amount of iron filings may fall, and the cavity 153 can be used to deposit these iron filings, reducing the wear on the surface of the tool bar 24.

[0045] As shown in Figure 4 the retaining ring comprises an outer ring 151 and an inner ring 152, the outer ring 151 is fixedly connected to the bottom end of the fixed sleeve 11 by bolts, the outer ring 151 has a gap with the bottom end of the rotating sleeve 12, the end of the outer ring 151 away from the rotating sleeve 12 is machined to form the cavity 153, and the inner ring 152 is fixedly connected to the bottom end of the outer ring 151 by bolts, the inner diameter of the inner ring 152 is smaller than the diameter of the cavity 153, that is, the upper end surface of the inner ring 152 is the bottom boundary of the cavity 153, and the inner ring 152 is in clearance fit with the tool bar 24.

[0046] In this embodiment, the three bearings 13 are sequentially sleeved on the outer periphery of the rotating sleeve 12, and a spacer 131 is provided between two of the bearings 13 and is close to the positioning disc 14. The fixed sleeve 11, the rotating sleeve 12, and the three bearings 13 form a lap support structure.

[0047] Specifically, the inner walls of both ends of the fixed sleeve 11 are provided with ring grooves, the ring groove at the upper end is used to accommodate the two bearings 13 and the spacer 131, and the ring groove at the lower end is used to accommodate the third bearing 13. The outer wall of the rotating sleeve 12 is provided with a protruding ring at a position corresponding to the spacer 131. During assembly, the first bearing 13 and the spacer 131 are sequentially loaded into the ring groove at the upper end of the fixed sleeve 11, then the rotating sleeve 12 is loaded, and then the second bearing 13 is loaded, the protruding ring of the rotating sleeve 12 is located between the first two bearings 13, the inner and outer rings of the first two bearings 13 are in interference fit with the rotating sleeve 12 and the fixed sleeve 11 respectively, then the fixed sleeve 11 is connected with the positioning disc 14 by bolts, then it is inverted, the third bearing 13 is loaded into the ring groove at the bottom end of the fixed sleeve 11, and finally the retaining ring is connected with the fixed sleeve 11 by bolts.

[0048] As shown in Figures 6-9As shown, the embodiment provides a vertical drilling machine 20, which comprises a vertical drilling guiding tool 10, a linear reciprocating movement mechanism 21 and a linear reciprocating clamp 22, the vertical drilling guiding tool 10 and the linear reciprocating clamp 22 are rigidly connected to the linear reciprocating movement mechanism 21, and the linear reciprocating clamp 22 is located above the vertical drilling guiding tool 10. The linear reciprocating clamp 22 can clamp and fix the bar body 60 and drive it to move linearly up and down, move the bar body 60 into the vertical drilling guiding tool 10, and in the process of driving the drill rod 24 to drill holes by rotating the cutter head 23, the linear reciprocating movement mechanism 21 drives the linear reciprocating clamp 22 to gradually move down, and after the drilling is completed, the linear reciprocating clamp 22 is driven to gradually move up, the linear reciprocating clamp 22 drives the workpiece to move up, and then compressed gas is introduced to blow away iron filings.

[0049] In one embodiment, the linear reciprocating movement mechanism 21 comprises a linear driver, a double linear slide rail pair and a fixed seat 211, the fixed seat 211 is rigidly connected to the linear driver and the double linear slide rail pair, the fixed seat 211 is provided with a mounting hole, the mounting hole is aligned with the clamping center of the linear reciprocating clamp 22, the vertical drilling guiding tool 10 is arranged in the mounting hole, and the linear driver drives the fixed seat 211 to reciprocate along the double linear slide rail pair; the linear reciprocating clamp 22 comprises a linear driver, a double linear slide rail pair and a pneumatic centering clamp, wherein the linear driver and the double linear slide rail pair are rigidly connected to the fixed seat 211 by bolts, the pneumatic centering clamp is rigidly connected to the sliding block of the double linear slide rail pair by bolts, and the linear driver drives the pneumatic centering clamp to reciprocate up and down along the double linear slide rail pair. The linear driver described above is a pneumatic cylinder, an electric cylinder or an oil cylinder.

[0050] By assembling the vertical drilling guiding tool 10, the wear of the drill rod 24 can be effectively reduced, the service life of the drill rod 24 is prolonged, the hard friction of the drill rod 24 is reduced, the drill rod 24 can drill holes at a faster speed, and the production efficiency is greatly improved.

[0051] The embodiment provides a bar drilling device, which comprises a vertical drilling machine 20, a joint robot 30 arranged on the front of the vertical drilling machine 20, a material conveying mechanism 40 arranged on one side of the joint robot 30, and a cooling liquid filtering and cooling device 50 arranged on one side of the vertical drilling machine 20.

[0052] The joint robot 30 obtains the bar from the material conveying mechanism 40 and transfers it to the linear reciprocating clamp 22 in the vertical drilling machine 20, and can also move the drilled bar out of the linear reciprocating clamp 22 and place it on the material conveying mechanism 40, thereby greatly improving the automation level of the processing of the screw sleeve and the screw cap, and the cooling liquid filtering and cooling device 50 is a matching equipment of the vertical drilling machine 20, which can make the cooling liquid be recycled.

[0053] Further, the material conveying mechanism 40 comprises a three-axis truss robot 41, a chain conveying line 42 and a material rack 43, wherein the three-axis truss robot 41 can transfer the bar on one material rack 43 to the chain conveying line 42, and through the chain conveying line 42, the bar is moved to the designated position, facilitating the joint robot 30 to quickly take; the chain conveying line 42 runs reversely, and can move the drilled bar to the designated position, facilitating the three-axis truss robot 41 to clamp and neatly place on another material rack 43, or through the three-axis truss robot 41, the drilled bar can be transferred to another chain conveying line 42 and conveyed to the subsequent processing equipment. Thus, the production efficiency and automation level are further improved.

[0054] Those skilled in the art should understand that the above discussion of any embodiment is only exemplary and is not intended to limit the scope of protection of the present application to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of one or more embodiments of the present application as described above, which are not provided in details for the sake of brevity.

[0055] One or more embodiments of the present application are intended to cover all such alternatives, modifications and variations falling within the broad scope of the present application. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. An upright drilling guide tool, characterized by, It comprises: A fixed sleeve (11), the side wall of which is provided with an air inlet hole (111) and a liquid inlet hole (112); A rotating sleeve (12) arranged in the fixed sleeve (11), a plurality of bearings (13) are arranged between the fixed sleeve (11) and the rotating sleeve (12) for the fixed shaft rotation of the rotating sleeve (12), the fixed sleeve (11) and the rotating sleeve (12) have a passage (122) therebetween, and the side wall of the rotating sleeve (12) is provided with a plurality of through holes (121); and A positioning disc (14) arranged at the top of the fixed sleeve (11) for positioning the center line of the bar to the axis of the rotating sleeve (12), and the outer wall of the rotating sleeve (12) and the inner wall of the positioning disc (14) form an annular gap (123); The diameter of the annular gap (123) gradually increases from top to bottom, compressed gas is introduced through the air inlet hole (111), the compressed gas passes through the passage (122), the gap between the top end of the fixed sleeve (11) and the bearing (13), and finally is sprayed from the annular gap (123), so that the airflow direction is towards the center of the rotating sleeve (12), and the airflow sprayed from the center hole of the rotating sleeve (12) can quickly remove the iron filings on the rotating sleeve (12), and the air inlet hole (111) is connected with a flow stop valve.

2. The vertical drilling guide tool of claim 1, wherein, The positioning disc (14) comprises a support ring (141) and a plurality of protrusions (142) circumferentially distributed on the support ring (141), and the area enclosed by the plurality of protrusions (142) is a bar positioning area.

3. The vertical drilling guide tool of claim 2, wherein, The part of the support ring (141) below the area enclosed by the plurality of protrusions (142) is an inner ring (143), and the top surface of the inner ring (143) is higher than the top end of the rotating sleeve (12).

4. The vertical drilling guide tool of claim 3, wherein, The side of the protrusion (142) close to the inner circle of the support ring (141) is provided with an inclined arc surface (1421) and a circular arc surface (1422) below the inclined arc surface (1421), and the circular arc surface (1422) is in contact with the side surface of the bar.

5. The vertical drilling guide tool according to any one of claims 1-4, characterized in that, It also comprises a stop ring (15) rigidly connected to the bottom end of the fixed sleeve (11), and the stop ring (15) is provided with a cavity (153) with a diameter larger than the inner diameter of the rotating sleeve (12).

6. The vertical drilling guide tool of any one of claims 1-4, wherein, Three bearings (13) are sequentially sleeved on the outer periphery of the rotating sleeve (12), and a spacer sleeve (131) is arranged between two of the bearings (13) and close to the positioning disc (14), and the fixed sleeve (11), the rotating sleeve (12) and the three bearings (13) form a lap joint support structure.

7. A vertical drilling machine, characterized in that It comprises: The vertical drilling guide tool (10), the linear reciprocating movement mechanism (21) and the linear reciprocating clamp (22) of any one of claims 1-6, the vertical drilling guide tool (10) and the linear reciprocating clamp (22) are rigidly connected to the linear reciprocating movement mechanism (21), and the linear reciprocating clamp (22) is located above the vertical drilling guide tool (10).

8. The vertical drilling machine according to claim 7, characterized in that The linear reciprocating movement mechanism (21) is provided with a fixed seat (211), the fixed seat (211) is provided with a mounting hole, the mounting hole is aligned with the clamping center of the linear reciprocating clamp (22), and the vertical drilling guide tool (10) is arranged in the mounting hole.

9. A bar drilling device, characterized by It comprises: The vertical drilling machine (20) according to claim 7 or 8, the articulated robot (30) provided on the front of the vertical drilling machine (20), the material conveying mechanism (40) provided on one side of the articulated robot (30), and the cooling liquid filtering and cooling device (50) provided on one side of the vertical drilling machine (20).

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