Tool for processing mining drill bit
By designing a tooling system for handling mining drill bits, and employing a vertical placement hole and a high-temperature resistant liner, the problem of drill bit deformation at high temperatures was solved, ensuring the coaxiality and straightness of the drill bit, and improving its accuracy and lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG XINTAOYANG MINING CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-05-19
AI Technical Summary
In existing technologies, drill bits are prone to deformation under high-temperature thermal stress, resulting in poor coaxiality and straightness, which affects the accuracy and lifespan of the drill bit.
A tooling for handling mining drill bits was designed, including a base and a stacking frame. It uses vertical placement holes and high-temperature resistant pads to ensure that the central axis of the drill bit is aligned with the direction of gravity, thus avoiding deformation.
This ensures that the drill bit does not deform during high-temperature processes, maintaining coaxiality and straightness, thus improving installation accuracy, drilling accuracy, and service life.
Smart Images
Figure CN224255307U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drill bit processing tooling technology, specifically a tooling for processing mining drill bits. Background Technology
[0002] Mining drill bits are critical tools used in mining, geological exploration, and tunneling projects to break rocks or coal seams. Their performance directly affects drilling efficiency, cost, and service life. The fabrication of mining drill bits involves sintering using powder metallurgy and heat treatment processes to balance the hardness and toughness of the drill bit.
[0003] In current operations, workers typically place drill bits, either awaiting sintering or requiring reheat treatment after sintering, horizontally onto a material tray and then feed them into the furnace for sintering or heat treatment. However, because the diameter of the drill bit head is larger than the diameter of the connecting part, and the connecting part has a certain length, the drill bit will be tilted when laid flat. The weight of the drill bit itself and the overlapping of different drill bits will cause uneven stress on the drill bit. Under high-temperature thermal stress, the drill bit will deform to some extent, bending to one side, resulting in poor coaxiality and straightness, affecting the accuracy and lifespan of the drill bit. Utility Model Content
[0004] To address the technical problems existing in the background art, this utility model provides a tooling for processing mining drill bits.
[0005] The technical solution of this utility model is as follows:
[0006] A tooling for processing mining drill bits includes a base and a stacking frame, with the stacking frame mounted above the base;
[0007] The base includes a load-bearing beam and supporting columns. The load-bearing beam extends laterally, and the supporting columns are symmetrically fixed at both ends of the load-bearing beam to provide vertical support.
[0008] The stacked frame includes stacked beams and connecting columns. The stacked beams are arranged parallel to the load-bearing beams, and the connecting columns are fixed to both ends of the stacked beams and connected to the base.
[0009] Both the load-bearing beam and the stacked crossbeam are provided with multiple placement holes that are evenly spaced in the transverse direction. The placement holes are vertical through holes that can be used to place the mining drill bit vertically. The placement holes on the load-bearing beam and the placement holes on the stacked crossbeam are staggered in the transverse direction.
[0010] The top surface of the load-bearing beam and the laminated crossbeam is provided with a groove, the placement hole is vertically aligned with the groove, and a high-temperature resistant liner is laid in the groove. The high-temperature resistant liner is provided with a clearance through hole coaxial with the placement hole.
[0011] The tooling of this application can place the mining drill bit vertically, so that its central axis is vertical and consistent with the direction of gravity. This ensures that the mining drill bit will not deform during high-temperature processes, thus ensuring the coaxiality of the mining drill bit, and consequently ensuring the installation accuracy, drilling accuracy, and service life of the mining drill bit.
[0012] In the above scheme, the mining drill bit includes a drill head and a drill connecting part arranged coaxially. The diameter of the drill connecting part is larger than the diameter of the drill head, and the diameter of the placement hole is larger than the diameter of the drill connecting part but smaller than the diameter of the drill head, so as to facilitate the quick insertion of the drill connecting part of the mining drill bit into the placement hole.
[0013] Furthermore, the center-to-center spacing of adjacent placement holes on the laminated crossbeam is equal to the center-to-center spacing of adjacent placement holes on the supporting beam.
[0014] Furthermore, the misalignment distance of the placement holes on the supporting beam and the stacked crossbeam is half the center distance between two adjacent placement holes in the lateral direction, thereby achieving a uniform three-dimensional misaligned arrangement of the mining drill bits.
[0015] Furthermore, the distance between the edges of two adjacent placement holes in the lateral direction is greater than the diameter of the drill bit head, so as to minimize the height at which the mining drill bit is placed on the stacked rack.
[0016] Furthermore, the number of holes on the stacked crossbeam is one less than the number of holes on the supporting beam, which not only facilitates the three-dimensional staggered arrangement of mining drill bits, but also allows for the placement of more mining drill bits on the base than on the stacked frame, resulting in greater weight and improved stability of the tooling as a whole when supporting the mining drill bits.
[0017] To reduce the accuracy requirements for the fit between the clearance through hole and the placement hole, the diameter of the clearance through hole is larger than the diameter of the placement hole but smaller than the diameter of the drill bit head. This allows the high-temperature resistant liner to be moved laterally during installation, so that all placement holes on the corresponding beam are exposed through the clearance through hole.
[0018] In the above scheme, the stacked frame is detachably connected to the base to facilitate the placement of mining drill bits on the supporting beams of the base.
[0019] Furthermore, the stacked rack is connected to the base via a plug-in locking structure.
[0020] In the above scheme, the high-temperature resistant gasket is made of graphite paper.
[0021] This utility model provides a tooling for handling mining drill bits, which can place the mining drill bit vertically so that its central axis is vertical and consistent with the direction of gravity. This ensures that the mining drill bit will not deform during high-temperature heating and subsequent cooling, thus ensuring the coaxiality and straightness of the mining drill bit. This also ensures the installation accuracy, drilling accuracy and service life of the mining drill bit. In addition, the spatial design and anti-stick design of the tooling further ensure the loading capacity and facilitate unloading. Attached Figure Description
[0022] In the attached diagram:
[0023] Figure 1 This is a schematic diagram of the tooling used in Example 1;
[0024] Figure 2 This is a front sectional view of the tooling in Example 1;
[0025] Figure 3 This is a schematic diagram of the internal structure of the container in Embodiment 2.
[0026] The components represented by the various reference numerals in the diagram are:
[0027] 1. Base; 11. Bearing beam; 12. Support column; 2. Stacked frame; 21. Stacked crossbeam; 22. Connecting support column; 3. Placement hole; 4. Container groove; 5. High temperature resistant liner; 6. Clearance through hole; 7. Mining drill bit; 8. Limiting post; 81. Expansion head; 9. Limiting hole. Detailed Implementation
[0028] Example 1:
[0029] For ease of understanding, it is hereby stated in advance that the horizontal and vertical directions mentioned in this application are two mutually perpendicular directions within a horizontal plane, and the vertical direction is the direction perpendicular to the horizontal plane.
[0030] like Figure 1 and Figure 2 As shown, this embodiment provides a tooling for processing mining drill bits, used to place the mining drill bit 7 during sintering or heat treatment of the sintered mining drill bit 7.
[0031] The fixture includes a base 1 and a stacking rack 2, which is mounted on top of the base 1.
[0032] The base 1 includes a load-bearing beam 11 and supporting columns 12. The load-bearing beam 11 extends laterally, and the supporting columns 12 are symmetrically fixed to both ends of the load-bearing beam 11 to provide vertical support. In this embodiment, the two ends of the load-bearing beam 11 are connected to the middle or upper-middle part of the supporting column 12, not at the top. This helps to lower the center of gravity of the base 1 itself, as well as the overall center of gravity of the base 1 when supporting the mining drill bit 7, resulting in strong anti-overturning properties. In addition, it also allows for a more uniform distribution of bending moment on the supporting column 12, reducing stress. Compared to the case where the load-bearing beam 11 is connected to the top of the supporting column 12, it can appropriately reduce the strength requirements of the supporting column 12, which is beneficial for material selection and manufacturing.
[0033] In this embodiment, the stacking frame 2 is preferably detachably connected to the base 1 to facilitate the placement of the mining drill bit 7 on the supporting beam 11 of the base 1.
[0034] Specifically, the stacked frame 2 includes a stacked crossbeam 21 and a connecting column 22. The stacked crossbeam 21 is arranged parallel to the bearing beam 11 and is located above the bearing beam 11. The connecting column 22 is fixed to both ends of the stacked crossbeam 21 and connected to the base 1.
[0035] In this embodiment, the stacked shelf 2 is detachably connected to the base 1 via a plug-in locking structure. Specifically, the plug-in locking structure includes a socket at the top of the support column 12 and a plug-in post at the bottom of the connecting column 22. The socket has a first pin hole that extends laterally through the support column 12, and the plug-in post has a second pin hole that aligns coaxially with the first pin hole when the plug-in post is inserted into the socket. The plug-in locking structure also includes a locking pin that can be laterally inserted into the first and second pin holes to lock the stacked shelf 2 and the base 1 together.
[0036] Both the load-bearing beam 11 and the stacked crossbeam 21 are provided with multiple placement holes 3 arranged evenly in the transverse direction. The placement holes 3 are vertical through holes, which can vertically place the mining drill bit 7.
[0037] Specifically, the mining drill bit 7 includes a drill head and a drill connecting part coaxially arranged, with the diameter of the drill connecting part being larger than the diameter of the drill head. In this embodiment, the diameter of the placement hole 3 is larger than the diameter of the drill connecting part but smaller than the diameter of the drill head, so as to facilitate the quick insertion of the drill connecting part of the mining drill bit 7 into the placement hole 3.
[0038] Furthermore, the placement holes 3 on the load-bearing beam 11 and the placement holes 3 on the laminated crossbeam 21 are staggered in the transverse direction.
[0039] Specifically, the center-to-center distance between adjacent placement holes 3 on the stacked crossbeam 21 is equal to the center-to-center distance between adjacent placement holes 3 on the supporting beam 11. The misalignment distance between the placement holes 3 on the supporting beam 11 and the stacked crossbeam 21 is half the center-to-center distance between two adjacent placement holes 3 in the lateral direction, so as to achieve a uniform three-dimensional misaligned arrangement of the mining drill bit 7.
[0040] In order to minimize the height of the mining drill bit 7 on the stacked frame 2, the distance between the edges of two adjacent placement holes 3 in the lateral direction is greater than the diameter of the drill bit head, so that the drill bit head of the mining drill bit 7 supported on the bearing beam 11 can extend into the side of the connection part of the mining drill bit 7 supported on the stacked crossbeam 21, thereby reducing the height of the bearing beam 11.
[0041] In this embodiment, the number of holes 3 on the stacked crossbeam 21 is set to be one less than the number of holes 3 on the bearing beam 11. This not only facilitates the three-dimensional staggered arrangement of the mining drill bits 7, but also allows for a greater number of mining drill bits 7 placed on the base 1 than on the stacked frame 2. This results in a greater weight and is more conducive to the stability of the tooling as a whole when bearing the mining drill bits 7.
[0042] Furthermore, the top surface of the supporting beam 11 and the laminated crossbeam 21 is provided with a groove 4, which is a recessed groove shape. The placement hole 3 is vertically corresponding to the groove 4 and extends downward from the bottom of the groove 4. A high-temperature resistant liner 5 is laid inside the groove 4, and the high-temperature resistant liner 5 is provided with a clearance through hole 6 coaxial with the placement hole 3.
[0043] The high-temperature resistant gasket 5 is a thin sheet that fits into the groove 4. In this embodiment, the high-temperature resistant gasket 5 is made of graphite paper.
[0044] The high-temperature resistant liner 5 has the properties of high temperature resistance and fast thermal conductivity. By setting the high-temperature resistant liner 5, it is possible to prevent the mining drill bit 7 from sticking to the supporting beam 11 or the stacked crossbeam 21 at high temperatures.
[0045] In order to reduce the accuracy requirements of the fit between the clearance through hole 6 and the placement hole 3, the diameter of the clearance through hole 6 is larger than the diameter of the placement hole 3 but smaller than the diameter of the drill bit head. This allows the high-temperature resistant liner 5 to be moved laterally when it is installed, so that all the placement holes 3 on the corresponding beam are exposed from the clearance through hole 6.
[0046] This utility model provides a tooling for handling mining drill bits, which can place the mining drill bit 7 vertically, making its central axis vertical and consistent with the direction of gravity. This ensures that the mining drill bit 7 will not deform during sintering or heat treatment and subsequent cooling, thus ensuring the coaxiality and straightness of the mining drill bit 7. It also ensures the installation accuracy, drilling accuracy and service life of the mining drill bit 7. In addition, the spatial design and anti-stick design of the tooling further ensure the furnace loading capacity and facilitate unloading.
[0047] Example 2:
[0048] like Figure 3 As shown, the tooling for processing mining drill bits provided in this embodiment is basically the same as that in Embodiment 1, except that the receiving groove 4 in this embodiment is further provided with several limiting posts 8, which are located between adjacent placement holes 3 and are distributed in a rectangular array. The high-temperature resistant gasket 5 is provided with limiting holes 9, which are inserted into the limiting posts 8.
[0049] The height of the limiting post 8 can be equal to the depth of the groove 4. An expansion head 81 can be provided at its upper end. The expansion head 81 is conical with the tip pointing upward, so as to facilitate the insertion of the limiting hole 9 on the high-temperature resistant gasket 5 into the limiting post 8, and to facilitate squeezing the high-temperature resistant gasket 5.
[0050] Because the high-temperature resistant liner 5 is a thin sheet, such as the graphite paper used in Example 1, it is relatively soft. When the mining drill bit 7 is removed after cooling, the high-temperature resistant liner 5 is easily lifted up, and may even be damaged during lifting, affecting the placement of the next batch of mining drill bits 7, requiring manual re-flattening. In this embodiment, the setting of the limiting post 8 can more firmly confine the high-temperature resistant liner 5 in the trough 4, avoiding the need for frequent flattening of the high-temperature resistant liner 5 and reducing the possibility of damage to the high-temperature resistant liner 5.
[0051] Finally, it should be noted that although the placement holes 3 on the supporting beam 11 and the stacked crossbeam 21 are only shown in a single row in the accompanying drawings of the above embodiments, in other embodiments, the placement holes 3 on the supporting beam 11 and the stacked crossbeam 21 can obviously be arranged in multiple rows.
[0052] In addition, although the stacking rack 2 is only shown as one layer in the accompanying drawings of the above embodiments, in other embodiments, the stacking rack 2 can obviously be set with multiple layers. When multiple layers are set, as long as the placement holes 3 of adjacent layers are still staggered to achieve the three-dimensional staggered arrangement of the mining drill bit 7, and the plug-in locking structure as described above can also be set between adjacent stacking racks 2, which will not be described again.
Claims
1. A tooling for processing mining drill bits, characterized in that, It includes a base (1) and a stacked shelf (2), the stacked shelf (2) being erected above the base (1); The base (1) includes a load-bearing beam (11) and a support column (12). The load-bearing beam (11) extends laterally, and the support column (12) is symmetrically fixed at both ends of the load-bearing beam (11) to provide vertical support. The stacked frame (2) includes a stacked crossbeam (21) and a connecting column (22). The stacked crossbeam (21) is arranged parallel to the bearing beam (11). The connecting column (22) is fixed to both ends of the stacked crossbeam (21) and connected to the base (1). Both the bearing beam (11) and the stacked crossbeam (21) are provided with a plurality of placement holes (3) evenly spaced in the transverse direction. The placement holes (3) are vertical through holes that can vertically place the mining drill bit (7). The placement holes (3) on the bearing beam (11) and the placement holes (3) on the stacked crossbeam (21) are staggered in the transverse direction. The top surface of the load-bearing beam (11) and the stacked crossbeam (21) is provided with a trough (4), the placement hole (3) is vertically corresponding to the trough (4), and a high-temperature resistant liner (5) is laid in the trough (4). The high-temperature resistant liner (5) is provided with a clearance through hole (6) coaxial with the placement hole (3).
2. The tooling for processing mining drill bits as described in claim 1, characterized in that, The mining drill bit (7) includes a drill head and a drill connecting part arranged coaxially. The diameter of the drill connecting part is larger than the diameter of the drill head. The diameter of the placement hole (3) is larger than the diameter of the drill connecting part but smaller than the diameter of the drill head.
3. The tooling for processing mining drill bits as described in claim 2, characterized in that, The center-to-center distance between adjacent placement holes (3) on the stacked crossbeam (21) is equal to the center-to-center distance between adjacent placement holes (3) on the bearing beam (11).
4. The tooling for processing mining drill bits as described in claim 3, characterized in that, The misalignment distance of the placement holes (3) on the bearing beam (11) and the stacked crossbeam (21) is 1 / 2 of the center distance between two adjacent placement holes (3) in the lateral direction.
5. The tooling for processing mining drill bits as described in claim 4, characterized in that, The distance between the edges of two adjacent placement holes (3) in the horizontal direction is greater than the diameter of the drill bit head.
6. The tooling for processing mining drill bits as described in claim 5, characterized in that, The number of holes (3) on the stacked beam (21) is one less than the number of holes (3) on the supporting beam (11).
7. The tooling for processing mining drill bits as described in claim 2, characterized in that, The diameter of the clearance through hole (6) is larger than the diameter of the placement hole (3) and smaller than the diameter of the drill bit head.
8. The tooling for processing mining drill bits as described in claim 1, characterized in that, The stacking rack (2) is detachably connected to the base (1).
9. The tooling for processing mining drill bits as described in claim 8, characterized in that, The stacked frame (2) is connected to the base (1) by a plug-in locking structure.
10. A tooling for processing mining drill bits as described in any one of claims 1-9, characterized in that, The high-temperature resistant gasket (5) is made of graphite paper.