Heavy heavy deep hole drilling and boring machine

Abstract

The invention provides a heavy and heavy deep hole drilling and boring machine, and relates to the technical field of drilling and boring machines, the heavy and heavy deep hole drilling and boring machine comprises a machine body, a spindle box, a pressure head base, a drill rod box, an oil head, an outer chip removal structure, an inner chip removal structure, an outer chip removal receiving groove, an inner chip removal receiving groove and a cutting fluid system; the spindle box, the pressure head base and the drill rod box are sequentially installed on the lathe bed from front to back, the pressure head base can move front and back relative to the lathe bed, the oil head is installed on the pressure head base, the outer chip removal structure is used for being connected to the rear end of the drill rod box, and the inner chip removal structure is used for being connected to the rear end of the drill rod box. The outer chip removal receiving groove is used for being installed below the rear end of a workpiece clamped by the spindle box, and the inner chip removal receiving groove is used for being installed below the rear end of the inner chip removal structure. The heavy and heavy deep hole drilling and boring machine has an inner chip removal trepanning machining function and an outer chip removal chambering machining function, and the adaptability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of drilling and boring machines, and in particular to a heavy-duty deep hole drilling and boring machine. Background Art

[0002] A heavy-duty deep hole drilling and boring machine is a machine tool specially used for deep hole processing of heavy and large parts. Due to the characteristics of deep hole processing, chip removal is required in the processing process to prevent chips from accumulating in the hole and affecting processing efficiency.

[0003] However, in the related art, heavy-duty deep hole drilling and boring machines usually only support a single chip removal method, such as internal chip removal or external chip removal. However, in the actual processing of the drilling and boring machine, the required chip removal methods may also be different when different processing methods are adopted. The current design of a single chip removal method will be difficult to meet the needs of different processing methods of the drilling and boring machine, affecting the adaptability of the drilling and boring machine. Summary of the invention

[0004] The problem solved by the invention is how to improve the adaptability of a heavy-duty deep hole boring machine.

[0005] In order to solve the above problems, the present invention provides a heavy-duty deep hole drilling and boring machine.

[0006] The present invention provides a heavy-duty deep hole drilling and boring machine, comprising a bed, a spindle box, a pressure head base, a drill rod box, an oil receiver, an external chip removal structure, an internal chip removal structure, an external chip removal receiving groove, an internal chip removal receiving groove and a cutting fluid system, wherein the spindle box, the pressure head base and the drill rod box are sequentially installed on the bed along a direction from front to rear, and the pressure head base can be moved forward and backward relative to the bed, the oil receiver is installed on the pressure head base, the external chip removal structure is used to be connected to the rear end of the drill rod box, the internal chip removal structure is used to be connected to the rear end of the drill rod box, the external chip removal receiving groove is used to be installed below the rear end of the workpiece clamped by the spindle box, the internal chip removal receiving groove is used to be installed below the rear end of the internal chip removal structure, and the two ends of the cutting fluid system are used to respectively connect the external chip removal structure and the external chip removal receiving groove or respectively connect the oil receiver and the internal chip removal receiving groove.

[0007] Optionally, the oil receiver includes a body and a connecting sleeve, the body is cylindrical, an oil pipe joint is passed through the wall of the body, the connecting sleeve is installed at the rear end of the inner cavity of the body and its inner diameter can be adjusted, and the connecting sleeve is used for the knife rod to pass through.

[0008] Optionally, the connecting sleeve includes an outer sleeve, an inner tapered sleeve and an adjusting sleeve, the outer sleeve is rotatably installed in the inner cavity of the main body, the inner diameter of the outer sleeve gradually increases from front to rear, so that the inner wall surface of the outer sleeve constitutes a first tapered surface, the inner tapered sleeve is inserted in the outer sleeve, the outer wall surface of the inner tapered sleeve is set as a second tapered surface that slides with the first tapered surface, the side of the inner tapered sleeve is provided with an opening, the opening passes through the side of the inner tapered sleeve along the axial direction of the inner tapered sleeve, the adjusting sleeve is installed in the inner cavity of the main body and is located on the rear side of the inner tapered sleeve, the outer wall of the adjusting sleeve is threadedly connected to the inner wall of the main body, the front end of the adjusting sleeve is connected to the rear end of the inner tapered sleeve through a rotating bearing, and the rear end of the adjusting sleeve extends out of the main body.

[0009] Optionally, an end face sealing ring is embedded in the front end face of the body, and the end face sealing ring is used to abut against the rear end face of the workpiece clamped by the spindle box.

[0010] Optionally, the drill rod box includes a box body, a mounting flange, a main shaft and an extension sleeve, the front end of the box body is provided with a first mounting hole, the rear end of the box body is provided with a second mounting hole, the mounting flange is installed in the second mounting hole, the front end of the main shaft is installed in the first mounting hole, the rear end of the main shaft is installed in the mounting flange, and the rear end face of the main shaft protrudes from the rear end face of the box body, the extension sleeve is arranged in the mounting flange, the front end of the extension sleeve is inserted into the inner hole of the main shaft, and the outer wall of the extension sleeve is formed with a connecting surface that fits with the rear end face of the main shaft.

[0011] Optionally, the inner wall of the extension sleeve is formed with an annular step surface opposite to the rear end of the extension sleeve, and the external chip removal structure includes an external chip removal sleeve, a sealing sleeve and a fastening flange, the front end of the external chip removal sleeve is used to be inserted into the extension sleeve, and the rear end of the external chip removal sleeve is used to connect the cutting fluid system, the sealing sleeve and the fastening flange are respectively sleeved on the outside of the external chip removal sleeve, the sealing sleeve is located on the front side of the fastening flange, and the fastening flange is used to connect to the rear end of the extension sleeve to press the sealing sleeve against the annular step surface.

[0012] Optionally, the external chip removal structure also includes a connecting flange, which is sleeved on the outside of the external chip removal sleeve, and the connecting flange includes a connecting tube and a connecting plate connected to the inner side of the connecting tube, and the connecting plate is connected to the outer wall of the external chip removal sleeve. The front end of the connecting tube is used to connect to the rear end of the mounting flange, and a connecting hole is opened in the middle of the connecting tube, and the connecting hole is connected to a transparent water pipe.

[0013] Optionally, the internal chip removal structure includes an internal chip removal sleeve, and the front end of the internal chip removal sleeve is used to connect to the rear end of the mounting flange.

[0014] Optionally, the cutting fluid system includes a water tank, a water trough, multiple lifting pumps and multiple centrifugal pumps, the inlets of the multiple lifting pumps are connected to the water trough, the outlets of the multiple lifting pumps are connected to the water tank, the inlets of the multiple centrifugal pumps are connected to the water tank, the outlets of the multiple centrifugal pumps are used to connect to the external chip removal structure or the oil receiver, and the water trough is used to connect to the external chip removal receiving groove or the internal chip removal receiving groove.

[0015] Optionally, the conveying medium of the cutting fluid system is an emulsion.

[0016] The beneficial effect of the heavy-duty deep hole drilling and boring machine of the present invention is as follows: by arranging the pressure head base to be movable forward and backward relative to the bed, the oil receiver is installed on the pressure head base, so that the oil receiver can move forward driven by the pressure head base to reach the internal chip removal position abutting against the rear end face of the workpiece, or move backward to reach the external chip removal position spaced from the rear end face of the workpiece, and in addition, by simultaneously designing the external chip removal structure and the internal chip removal structure, when external chip removal is required, the external chip removal structure can be connected to the rear end of the drill rod box, and when internal chip removal is required, the internal chip removal structure can be connected to the rear end of the drill rod box, and by designing the cutting fluid system, when external chip removal is required, the two ends of the cutting fluid system can be connected to the external chip removal structure and the external chip removal receiving groove respectively, and when internal chip removal is required, the two ends of the cutting fluid system can be connected to the oil receiver and the internal chip removal receiving groove respectively. In this way, when the heavy-duty deep hole drilling and boring machine is performing trepanning processing, internal chip removal is required at this time, the pressure head base can be moved to drive the oil receiver to the internal chip removal position, and the internal chip removal structure is connected to the rear end of the drill rod box, and at the same time, the two ends of the cutting fluid system are respectively connected to the oil receiver and the internal chip removal receiving groove. In this way, the cutting fluid of the cutting fluid system can first enter the oil receiver, then flow to the cutting position of the workpiece to take away the chips, then flow to the inner hole of the tool rod, and then flow out through the inner hole of the spindle of the drill rod box to the internal chip removal receiving groove, and finally flow back to the cutting fluid system, realizing the internal chip removal trepanning processing function. When the heavy-duty deep hole drilling and boring machine is performing hole expansion processing, external chip removal is required at this time, the pressure head base can be moved. The oil receiver moves to drive the oiler to the external chip removal position, and the external chip removal structure is connected to the rear end of the drill rod box, and the two ends of the cutting fluid system are connected to the external chip removal structure and the external chip removal receiving groove respectively. In this way, the cutting fluid of the cutting fluid system can first enter the external chip removal structure, and then flow to the inner hole of the tool rod through the inner hole of the spindle of the drill rod box, and then flow to the cutting position of the workpiece to take away the chips, and then be discharged at the V-groove outside the drill bit of the tool rod to flow to the external chip removal receiving groove, and finally flow back to the cutting fluid system, realizing the external chip removal and hole expansion processing function. That is, the heavy-duty deep hole drilling and boring machine has both internal and external chip removal functions, which can correspond to the matching trepanning processing method and the hole expansion processing method, thereby improving adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a structural schematic diagram of a heavy-duty deep hole drilling and boring machine according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of an oil receiver according to an embodiment of the present invention;

[0019] Figure 3 It is a schematic diagram of the installation of the external chip removal structure at the drill pipe box according to an embodiment of the present invention;

[0020] Figure 4 It is a schematic diagram of the installation of the chip removal structure at the drill rod box in an embodiment of the present invention.

[0021] Description of reference numerals:

[0022] 1. Bed; 11. External chip receiving groove; 12. Internal chip receiving groove; 13. Roller device; 14. Center frame; 2. Spindle box; 21. Chuck; 3. Pressure head base; 4. Drill rod box; 41. Box body; 411. First mounting hole; 412. Second mounting hole; 42. Mounting flange; 43. Spindle; 44. Extension sleeve; 441. Connecting surface; 442. Annular step surface; 5. Oil receiver; 51. Main body; 511. First sleeve; 512. Second sleeve; 513. Front sleeve; 5131, end face sealing ring; 52, connecting sleeve; 521, outer shaft sleeve; 5211, first conical surface; 522, inner conical sleeve; 5221, second conical surface; 523, adjusting sleeve; 5231, rotating bearing; 53, oil pipe joint; 6, external chip removal structure; 61, external chip removal sleeve; 62, sealing sleeve; 63, fastening flange; 64, connecting flange; 641, connecting sleeve; 6411, connecting hole; 642, connecting plate; 7, internal chip removal structure; 71, internal chip removal sleeve; 8, workpiece; 9, tool rod. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0024] The Z axis in the drawings represents the vertical direction, that is, the up-down position, and the positive direction of the Z axis represents the top, and the reverse direction of the Z axis represents the bottom; the X axis in the drawings represents the horizontal direction, and is designated as the front-back position, and the positive direction of the X axis represents the front side, and the reverse direction of the X axis represents the back side. It should also be noted that the aforementioned Z axis and X axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0025] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0026] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0027] The present invention provides a heavy-duty deep hole boring and drilling machine, which has both internal and external chip removal functions, so that it can match different processing methods and improve adaptability. Detailed description is given below in conjunction with specific embodiments.

[0028] like Figure 1As shown, a heavy-duty deep hole boring and drilling machine provided by the present invention comprises a bed 1, a spindle box 2, a pressure head base 3, a drill rod box 4, an oil receiver 5, an external chip removal structure 6, an internal chip removal structure 7, an external chip removal receiving groove 11, an internal chip removal receiving groove 12 and a cutting fluid system, wherein the spindle box 2, the pressure head base 3 and the drill rod box 4 are sequentially installed on the bed 1 in a direction from front to back, and the pressure head base 3 can be moved forward and backward relative to the bed 1, and the oil receiver 5 is installed on the pressure head base 3 The external chip removal structure 6 is used to be connected to the rear end of the drill rod box 4, the internal chip removal structure 7 is used to be connected to the rear end of the drill rod box 4, the external chip removal receiving groove 11 is used to be installed below the rear end of the workpiece 8 clamped by the spindle box 2, and the internal chip removal groove 12 is used to be installed below the rear end of the internal chip removal structure 7. The two ends of the cutting fluid system are used to respectively connect the external chip removal structure 6 and the external chip removal groove 11 or respectively connect the oil receiver 5 and the internal chip removal groove 12.

[0029] It should be noted that the direction from front to back refers to the opposite direction of the X-axis. In addition, a guide rail extending forward and backward can be provided on the bed 1, and the pressure head base 3 is installed on the guide rail, so that the pressure head base 3 can move forward and backward relative to the bed 1. In addition, a chuck 21 can be provided on the spindle box 2 to clamp the workpiece 8, and a roller device 13 can be provided on the bed 1 at a position below the workpiece 8 to support the workpiece 8. At the same time, the heavy-duty deep hole drilling and boring machine can also include a plurality of center frames 14, which are installed on the bed 1 and located between the pressure head base 3 and the drill rod box 4. The plurality of center frames 14 can be provided for the tool rod 9 to pass through to support the tool rod 9.

[0030] In this embodiment, the pressure head base 3 is arranged to be movable forward and backward relative to the bed 1, and the oil receiver 5 is installed on the pressure head base 3. In this way, the oil receiver 5 can be moved forward driven by the pressure head base 3 to reach the internal chip removal position abutting the rear end face of the workpiece 8, or move backward to reach the external chip removal position spaced from the rear end face of the workpiece 8. In addition, the external chip removal structure 6 and the internal chip removal structure 7 are designed at the same time. When external chip removal is required, the external chip removal structure 6 can be connected to the rear end of the drill rod box 4, and when internal chip removal is required, the internal chip removal structure 7 can be connected to the rear end of the drill rod box 4. In addition, the cutting fluid system is designed. When external chip removal is required, the two ends of the cutting fluid system can be connected to the external chip removal structure 6 and the external chip removal receiving groove 11 respectively, and when internal chip removal is required, the two ends of the cutting fluid system can be connected to the oil receiver 5 and the internal chip removal receiving groove 12 respectively. In this way, when the heavy-duty deep hole drilling and boring machine is performing trepanning processing, internal chip removal is required at this time, the pressure head base 3 can be moved to drive the oil receiver 5 to the internal chip removal position, and the internal chip removal structure 7 is connected to the rear end of the drill rod box 4, and at the same time, the two ends of the cutting fluid system are respectively connected to the oil receiver 5 and the internal chip removal receiving groove 12. In this way, the cutting fluid of the cutting fluid system can first enter the oil receiver 5, then flow to the cutting position of the workpiece 8 to take away the chips, and then flow to the inner hole of the tool rod 9, and then flow out through the inner hole of the spindle 43 of the drill rod box 4 to the internal chip removal receiving groove 12, and finally flow back to the cutting fluid system, realizing the internal chip removal trepanning processing function. When the heavy-duty deep hole drilling and boring machine is performing hole expansion processing, external chip removal is required at this time, the pressure head base 3 can be moved. It moves to drive the oil receiver 5 to the external chip removal position, and connects the external chip removal structure 6 to the rear end of the drill rod box 4, and at the same time connects the two ends of the cutting fluid system to the external chip removal structure 6 and the external chip removal receiving groove 11 respectively. In this way, the cutting fluid of the cutting fluid system can first enter the external chip removal structure 6, and then flow to the inner hole of the tool rod 9 through the inner hole of the main shaft 43 of the drill rod box 4, and then flow to the cutting position of the workpiece 8 to take away the chips, and then be discharged at the V-groove outside the drill bit of the tool rod 9 to flow to the external chip removal receiving groove 11, and finally flow back to the cutting fluid system, realizing the external chip removal and hole expansion processing function, that is, the heavy-duty deep hole drilling and boring machine has both internal and external chip removal functions, can correspond to the matching trepanning processing method and the hole expansion processing method, and improves adaptability.

[0031] Alternatively, if Figure 2 As shown, the oil receiver 5 includes a main body 51 and a connecting sleeve 52. The main body 51 is cylindrical, and an oil pipe joint 53 is passed through the wall of the main body 51. The connecting sleeve 52 is installed at the rear end of the inner cavity of the main body 51 and its inner diameter can be adjusted. The connecting sleeve 52 is used for the knife rod 9 to pass through.

[0032] It can be understood that since the inner diameter of the connecting sleeve 52 can be adjusted, when installing the tool rod 9 to the oil receiver 5, the connecting sleeve 52 can be adjusted first so that the inner diameter of the connecting sleeve 52 is slightly larger than the diameter of the tool rod 9, and then the tool rod 9 is passed through the connecting sleeve 52, and then the inner diameter of the connecting sleeve 52 is reduced so that the connecting sleeve 52 can clamp the tool rod 9, thereby achieving fixed installation of the tool rod 9 at the oil receiver 5.

[0033] In this optional embodiment, by making the inner diameter of the connecting sleeve 52 adjustable, when installing the tool rod 9 to the oil receiver 5, the inner diameter of the connecting sleeve 52 can be enlarged in advance to facilitate the tool rod 9 to quickly pass through the connecting sleeve 52, which is beneficial to improving the installation efficiency of the tool rod 9 on the oil receiver 5.

[0034] Alternatively, if Figure 2 As shown, the connecting sleeve 52 includes an outer sleeve 521, an inner cone sleeve 522 and an adjusting cylinder 523. The outer sleeve 521 is rotatably installed in the inner cavity of the body 51. The inner diameter of the outer sleeve 521 gradually increases from the front to the back, so that the inner wall surface of the outer sleeve 521 forms a first cone surface 5211. The inner cone sleeve 522 is inserted in the outer sleeve 521. The outer wall surface of the inner cone sleeve 522 is set to a second cone surface 522 that is slidably matched with the first cone surface 5211. 1. An opening is provided on the side of the inner cone sleeve 522, and the opening penetrates the side of the inner cone sleeve 522 along the axial direction of the inner cone sleeve 522. The adjusting cylinder 523 is installed in the inner cavity of the body 51 and is located at the rear side of the inner cone sleeve 522. The outer wall of the adjusting cylinder 523 is threadedly connected to the inner wall of the body 51. The front end of the adjusting cylinder 523 is connected to the rear end of the inner cone sleeve 522 through a rotating bearing 5231, and the rear end of the adjusting cylinder 523 extends out of the body 51.

[0035] Specifically, a bearing may be provided between the outer wall of the outer sleeve 521 and the inner wall of the body 51, so as to realize the rotatable installation of the outer sleeve 521 in the inner cavity of the body 51 by means of the bearing. Specifically, the body 51 may include a second sleeve 512, and the connecting sleeve 52 may be installed in the second sleeve 512.

[0036] In this optional embodiment, through the above-mentioned arrangement, when the adjusting cylinder 523 is screwed forward, the second cone surface 5221 will move forward along the first cone surface 5211, and since an opening is provided on the side of the inner cone sleeve 522, the inner cone sleeve 522 will be deformed and the inner diameter will become smaller when the second cone surface 5221 moves forward, and when the adjusting cylinder 523 is screwed out backward, the second cone surface 5221 will move backward along the first cone surface 5211, and since an opening is provided on the side of the inner cone sleeve 522, the inner cone sleeve 522 will be deformed and the inner diameter will become larger when the second cone surface 5221 moves backward, thereby achieving adjustable inner diameter of the connecting sleeve 52, so that the tool rod 9 can pass quickly when the adjusting cylinder 523 is screwed out backward, thereby making the installation efficiency of the tool rod 9 higher.

[0037] Alternatively, if Figure 2 As shown, an end face sealing ring 5131 is embedded in the front end face of the body 51 , and the end face sealing ring 5131 is used to abut against the rear end face of the workpiece 8 clamped by the spindle box 2 .

[0038] Specifically, a side tool holder may be provided on the pressure head base 3 to perform fine machining on the rear end face of the workpiece 8, thereby ensuring the parallelism between the rear end face of the workpiece 8 and the front end face of the body 51, and improving the sealing performance when the two are fitted. In addition, the body 51 may include a first sleeve 511 and a second sleeve 512 connected to the rear end of the first sleeve 511, a front sleeve 513 is rotatably installed in the first sleeve 511, a bearing may be provided between the outer wall of the front sleeve 513 and the inner wall of the first sleeve 511, so as to realize the rotatable installation of the front sleeve 513 in the first sleeve 511 by using the bearing, the front end of the front sleeve 513 may extend out of the first sleeve 511, and an end face sealing ring 5131 is embedded in the front end face of the front sleeve 513.

[0039] In this optional embodiment, the end face sealing ring 5131 on the front end face of the main body 51 can abut against the rear end face of the workpiece 8. In this way, when the pressure head base 3 moves to drive the oil receiver 5 to reach the internal chip removal position, the presence of the end face sealing ring 5131 can ensure the seal between the oil receiver 5 and the workpiece 8, thereby avoiding leakage of cutting fluid during internal chip removal and affecting the internal chip removal effect.

[0040] Alternatively, if Figure 3As shown, the drill rod box 4 includes a box body 41, a mounting flange 42, a main shaft 43 and an extension sleeve 44. The front end of the box body 41 is provided with a first mounting hole 411, the rear end of the box body 41 is provided with a second mounting hole 412, the mounting flange 42 is installed in the second mounting hole 412, the front end of the main shaft 43 is installed in the first mounting hole 411, the rear end of the main shaft 43 is installed in the mounting flange 42, and the rear end face of the main shaft 43 protrudes from the rear end face of the box body 41, the extension sleeve 44 is arranged in the mounting flange 42, the front end of the extension sleeve 44 is inserted into the inner hole of the main shaft 43, and the outer wall of the extension sleeve 44 is formed with a connecting surface 441 that fits with the rear end face of the main shaft 43.

[0041] In this optional embodiment, the rear end face of the main shaft 43 protrudes from the rear end face of the housing 41, and the outer wall of the extension sleeve 44 is formed with a connecting surface 441 that fits with the rear end face of the main shaft 43. That is to say, the connecting surface 441 is located on the outside of the rear end face of the housing 41. In this way, when the cutting fluid in the inner hole of the main shaft 43 leaks from the connecting surface 441, it will only be discharged to the outside of the housing 41, thereby preventing the cutting fluid from being discharged into the interior of the housing 41 and polluting the internal lubrication system of the housing 41.

[0042] Alternatively, if Figure 3 As shown, the inner wall of the extension sleeve 44 is formed with an annular step surface 442 opposite to the rear end of the extension sleeve 44, and the external chip removal structure 6 includes an external chip removal sleeve 61, a sealing sleeve 62 and a fastening flange 63. The front end of the external chip removal sleeve 61 is used to be inserted into the extension sleeve 44, and the rear end of the external chip removal sleeve 61 is used to connect the cutting fluid system. The sealing sleeve 62 and the fastening flange 63 are respectively sleeved on the outside of the external chip removal sleeve 61, and the sealing sleeve 62 is located on the front side of the fastening flange 63. The fastening flange 63 is used to be connected to the rear end of the extension sleeve 44 to press the sealing sleeve 62 against the annular step surface 442.

[0043] Specifically, the sealing sleeve 62 may be made of sealing material.

[0044] In this optional embodiment, the sealing sleeve 62 is located on the front side of the fastening flange 63, and the fastening flange 63 can be connected to the rear end of the extension sleeve 44 to press the sealing sleeve 62 against the annular step surface 442, thereby achieving sealing at the connection position between the external chip removal sleeve 61 and the extension sleeve 44, which is beneficial to ensuring the pressure of the cutting fluid system to supply cutting fluid to the spindle 43.

[0045] Alternatively, if Figure 3As shown, the external chip removal structure 6 also includes a connecting flange 64, which is sleeved on the outside of the external chip removal sleeve 61. The connecting flange 64 includes a connecting tube 641 and a connecting plate 642 connected to the inner side of the connecting tube 641. The connecting plate 642 is connected to the outer wall of the external chip removal sleeve 61. The front end of the connecting tube 641 is used to connect to the rear end of the mounting flange 42. A connecting hole 6411 is opened in the middle of the connecting tube 641, and a transparent water pipe is connected to the connecting hole 6411.

[0046] In this optional embodiment, it is understandable that when the connection position between the outer chip removal sleeve 61 and the extension sleeve 44 is not sealed well, the cutting fluid will leak from the connection position. In this solution, a connecting hole 6411 is opened in the middle of the connecting tube 641, and the connecting hole 6411 is connected to a transparent water pipe. In this way, after the cutting fluid leaks, it will naturally be discharged from the water pipe through the connecting hole 6411 to ensure that the leakage can be discovered in time.

[0047] Alternatively, if Figure 4 As shown, the inner chip removal structure 7 includes an inner chip removal sleeve 71 , and the front end of the inner chip removal sleeve 71 is used to connect with the rear end of the mounting flange 42 .

[0048] In this optional embodiment, the internal chip removal structure 7 is composed of an internal chip removal sleeve 71. During internal chip removal, the cutting fluid in the inner hole of the spindle 43 flows to the internal chip removal sleeve 71, and then naturally flows out at the rear end of the internal chip removal sleeve 71 and flows down to the internal chip removal receiving groove 12. The structure of the internal chip removal sleeve 71 is simple, which is conducive to the rapid switching of internal and external chip removal methods.

[0049] Optionally, the cutting fluid system includes a water tank, a water trough, multiple lifting pumps and multiple centrifugal pumps, the inlets of the multiple lifting pumps are connected to the water trough, the outlets of the multiple lifting pumps are connected to the water tank, the inlets of the multiple centrifugal pumps are connected to the water tank, the outlets of the multiple centrifugal pumps are used to connect to the external chip removal structure 6 or the oil receiver 5, and the water trough is used to connect to the external chip removal receiving groove 11 or the internal chip removal receiving groove 12.

[0050] It can be understood that the cutting fluid system is composed of a water tank, a water trough, multiple lifting pumps and multiple centrifugal pumps. During internal chip removal, the outlets of the multiple centrifugal pumps are connected to the oil receiver 5, and the water trough is connected to the internal chip removal receiving groove 12. In this way, the cutting fluid can flow from the water tank to the oil receiver 5 under the pumping of multiple centrifugal pumps, and after flowing to the water trough through the internal chip removal receiving groove 12, it flows back to the water tank under the pumping of multiple lifting pumps to achieve internal chip removal. During external chip removal, the outlets of the multiple centrifugal pumps are connected to the external chip removal structure 6, and the water trough is connected to the external chip removal receiving groove 11. In this way, the cutting fluid can flow from the water tank to the external chip removal structure 6 under the pumping of multiple centrifugal pumps, and after flowing to the water trough through the external chip removal receiving groove 11, it flows back to the water tank under the pumping of multiple lifting pumps to achieve external chip removal.

[0051] In addition, filter screens can be respectively arranged between the inlets of multiple centrifugal pumps and the water tanks, and between the outlets of multiple centrifugal pumps and the water tanks to filter particulate matter in the cutting fluid and prevent impurities from flowing back into the water tank. Furthermore, the inner chip receiving tank 12 can be connected to the water tank through a chip collection cart, and the chips in the cutting fluid can be collected by the chip collection cart. In addition, a filtering structure can also be arranged at the outlet of the outer chip receiving tank 11 connected to the water tank to collect chips in the cutting fluid.

[0052] In this optional embodiment, since multiple lifting pumps are used in parallel in the cutting fluid system and multiple centrifugal pumps are used in parallel, the flow rate of the system cutting fluid can be increased, thereby improving the chip removal efficiency.

[0053] Optionally, the conveying medium of the cutting fluid system is an emulsion.

[0054] In this optional embodiment, an emulsion is used as the cutting fluid. Compared with the traditional anti-wear hydraulic oil, this solution is more environmentally friendly, has a better cooling effect and lower costs.

[0055] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A heavy-duty deep hole boring and drilling machine, characterized in that: The invention comprises a bed (1), a spindle box (2), a pressure head base (3), a drill rod box (4), an oil receiver (5), an external chip removal structure (6), an internal chip removal structure (7), an external chip removal receiving groove (11), an internal chip removal receiving groove (12) and a cutting fluid system. The spindle box (2), the pressure head base (3) and the drill rod box (4) are sequentially mounted on the bed (1) from front to back, and the pressure head base (3) is movable forward and backward relative to the bed (1). The oil receiver (5) is mounted on the pressure head base (3). The external chip removal structure (6) and the internal chip removal structure (7) are arranged to be movable forward and backward relative to the bed (1). The structure (6) is used to be connected to the rear end of the drill rod box (4), the internal chip removal structure (7) is used to be connected to the rear end of the drill rod box (4), the external chip removal receiving groove (11) is used to be installed below the rear end of the workpiece (8) clamped by the spindle box (2), the internal chip removal receiving groove (12) is used to be installed below the rear end of the internal chip removal structure (7), and the two ends of the cutting fluid system are used to respectively connect the external chip removal structure (6) and the external chip removal receiving groove (11) or respectively connect the oil receiver (5) and the internal chip removal receiving groove (12).

2. The heavy-duty deep hole boring and drilling machine according to claim 1, characterized in that: The oil receiver (5) comprises a body (51) and a connecting sleeve (52); the body (51) is cylindrical; an oil pipe joint (53) is passed through the wall of the body (51); the connecting sleeve (52) is installed at the rear end of the inner cavity of the body (51) and its inner diameter can be adjusted; the connecting sleeve (52) is used for the knife rod (9) to pass through.

3. The heavy-duty deep hole boring and drilling machine according to claim 2, characterized in that: The connecting sleeve (52) comprises an outer sleeve (521), an inner cone sleeve (522) and an adjusting cylinder (523); the outer sleeve (521) is rotatably mounted in the inner cavity of the body (51); the inner diameter of the outer sleeve (521) gradually increases from the front to the rear, so that the inner wall surface of the outer sleeve (521) forms a first cone surface (5211); the inner cone sleeve (522) is inserted into the outer sleeve (521); the outer wall surface of the inner cone sleeve (522) is arranged as a second cone surface (5221) that is slidably matched with the first cone surface (5211). An opening is provided on the side of the inner cone sleeve (522), and the opening penetrates the side of the inner cone sleeve (522) along the axial direction of the inner cone sleeve (522). The adjusting cylinder (523) is installed in the inner cavity of the body (51) and is located at the rear side of the inner cone sleeve (522). The outer wall of the adjusting cylinder (523) is threadedly connected to the inner wall of the body (51). The front end of the adjusting cylinder (523) is connected to the rear end of the inner cone sleeve (522) through a rotating bearing (5231), and the rear end of the adjusting cylinder (523) extends out of the body (51).

4. The heavy-duty deep hole boring and drilling machine according to claim 2, characterized in that: An end face sealing ring (5131) is embedded in the front end face of the body (51), and the end face sealing ring (5131) is used to abut against the rear end face of the workpiece (8) clamped by the spindle box (2).

5. The heavy-duty deep hole boring and drilling machine according to claim 1, characterized in that: The drill rod box (4) comprises a box body (41), a mounting flange (42), a main shaft (43) and an extension sleeve (44). The front end of the box body (41) is provided with a first mounting hole (411), the rear end of the box body (41) is provided with a second mounting hole (412), the mounting flange (42) is installed in the second mounting hole (412), the front end of the main shaft (43) is installed in the first mounting hole (411), the rear end of the main shaft (43) is installed in the mounting flange (42), and the rear end face of the main shaft (43) protrudes from the rear end face of the box body (41), the extension sleeve (44) is arranged in the mounting flange (42), the front end of the extension sleeve (44) is inserted into the inner hole of the main shaft (43), and the outer wall of the extension sleeve (44) is formed with a connecting surface (441) that fits with the rear end face of the main shaft (43).

6. The heavy-duty deep hole boring and drilling machine according to claim 5, characterized in that: The inner wall of the extension sleeve (44) is formed with an annular step surface (442) opposite to the rear end of the extension sleeve (44); the external chip removal structure (6) comprises an external chip removal sleeve (61), a sealing sleeve (62) and a fastening flange (63); the front end of the external chip removal sleeve (61) is used to be inserted into the extension sleeve (44); the rear end of the external chip removal sleeve (61) is used to connect the cutting fluid system; the sealing sleeve (62) and the fastening flange (63) are respectively sleeved on the outside of the external chip removal sleeve (61); the sealing sleeve (62) is located at the front side of the fastening flange (63); the fastening flange (63) is used to be connected to the rear end of the extension sleeve (44) so ​​as to press the sealing sleeve (62) onto the annular step surface (442).

7. The heavy-duty deep hole boring and drilling machine according to claim 6, characterized in that: The external chip removal structure (6) further comprises a connecting flange (64), wherein the connecting flange (64) is sleeved on the outer side of the external chip removal sleeve (61), wherein the connecting flange (64) comprises a connecting tube (641) and a connecting plate (642) connected to the inner side of the connecting tube (641), wherein the connecting plate (642) is connected to the outer wall of the external chip removal sleeve (61), wherein the front end of the connecting tube (641) is used to connect to the rear end of the mounting flange (42), and a connecting hole (6411) is provided in the middle of the connecting tube (641), wherein the connecting hole (6411) is connected to a transparent water pipe.

8. The heavy-duty deep hole boring and drilling machine according to claim 5, characterized in that: The internal chip removal structure (7) comprises an internal chip removal sleeve (71), and the front end of the internal chip removal sleeve (71) is used to connect to the rear end of the mounting flange (42).

9. The heavy-duty deep hole boring and drilling machine according to claim 1, characterized in that: The cutting fluid system includes a water tank, a water trough, a plurality of lifting pumps and a plurality of centrifugal pumps, wherein the inlets of the plurality of lifting pumps are connected to the water trough, the outlets of the plurality of lifting pumps are connected to the water tank, the inlets of the plurality of centrifugal pumps are connected to the water tank, the outlets of the plurality of centrifugal pumps are used to connect to the external chip removal structure (6) or the oil receiver (5), and the water trough is used to connect to the external chip removal receiving groove (11) or the internal chip removal receiving groove (12).

10. The heavy-duty deep hole boring and drilling machine according to claim 9, characterized in that: The conveying medium of the cutting fluid system is an emulsion.

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