Drill bit quenching frame

Abstract

The utility model discloses a drill bit quenching frame, which relates to the technical field of quenching clamps and comprises a first fixing plate and a second fixing plate positioned below the first fixing plate, a plurality of elastic clamping devices are fixedly arranged at the lower end of the first fixing plate, and first fastening holes penetrating up and down are formed in the positions, corresponding to the elastic clamping devices, of the first fixing plate; the elastic clamping device comprises at least two elastic clamping pieces, the elastic clamping pieces are circumferentially distributed around the axes of the corresponding first fastening holes, the lower ends of the elastic clamping pieces jointly define a clamping hole, and the lower ends of the elastic clamping pieces make arc line contact with the outer side wall of the drill bit handle to be clamped. A plurality of second fastening holes penetrating up and down are formed in the second fixing plate, and the second fastening holes are in one-to-one correspondence with the elastic clamping devices; the lower end of each elastic clamping piece of the elastic clamping device is arranged in the second fastening hole in a penetrating mode. And the drill bit can stably keep a vertical fixed posture, the falling risk is reduced, and the safety of the quenching furnace is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to quenching fixture technical field, in particular to a drill quenching frame. BACKGROUND

[0002] The quenching frame is used for clamping the workpiece to be quenched to ensure that the workpiece is in the correct position and posture, keeps stable and reduces deformation in the quenching process, and ensures that the surface of the workpiece does not contact the furnace body to avoid burning or damage of the surface of the workpiece.

[0003] The existing quenching frame is difficult to fix the vertical posture of the drill (such as high speed steel twist drill), and thus cannot guarantee the degree of deformation of the drill, and even causes the drill to fall and damage the quenching furnace. SUMMARY

[0004] The utility model aims at providing a drill quenching frame to solve the problems existing in the prior art, so that the drill can be stably kept in the vertical fixed posture, the falling risk is reduced, and the safety of the quenching furnace is ensured.

[0005] To achieve the above-mentioned purpose, the utility model provides the following scheme:

[0006] The utility model provides a drill quenching frame, which comprises a first fixed plate and a second fixed plate below the first fixed plate, a plurality of elastic clamps are fixedly arranged at the lower end of the first fixed plate, and a first fastening hole penetrating up and down is formed at the position corresponding to each elastic clamp on the first fixed plate, each elastic clamp comprises at least two elastic clamping pieces, the elastic clamping pieces are distributed in the circumferential direction around the axis of the corresponding first fastening hole, the lower end of the elastic clamping piece is closer to the axis of the first fastening hole than the upper end of the elastic clamping piece, the lower end of each elastic clamping piece jointly encloses a clamping hole, and the side of the lower end of each elastic clamping piece close to the axis of the first fastening hole is in arc line contact with the outer side wall of the shank of the drill to be clamped, in the axial direction of the first fastening hole, the upper end of the elastic clamping piece is located on the outer side of the corresponding first fastening hole, the inner diameter of the first fastening hole is not less than the outer diameter of the shank of the drill to be clamped, and the inner diameter of the clamping hole of the elastic clamp is not greater than the outer diameter of the shank of the drill to be clamped, a plurality of second fastening holes penetrating up and down are formed on the second fixed plate, the second fastening holes correspond to the elastic clamps one by one, the lower end of each elastic clamping piece of the elastic clamp is arranged in the second fastening hole, and when the first fixed plate is close to the second fixed plate, the lower end of each elastic clamping piece of the elastic clamp can be close to the axis of the corresponding first fastening hole under the constraint of the second fastening hole.

[0007] Preferably, a hanger is fixedly arranged on the second fixed plate, and a through hole is formed in the first fixed plate, and the hanger can pass through the through hole.

[0008] Preferably, a plurality of stress release holes for reducing plate deformation are formed in the first fixed plate and the second fixed plate.

[0009] Preferably, the outer side wall of the elastic clamping piece away from the axis of the first fastening hole is a smooth curved surface.

[0010] Preferably, the elastic holder comprises four elastic clamping pieces.

[0011] Preferably, the first fixed plate has a first arrangement area and a second arrangement area, and the first arrangement area and the second arrangement area are provided with the first fastening hole and the elastic holder, and the first fastening hole and the elastic holder in the first arrangement area and the first fastening hole and the elastic holder in the second arrangement area are distributed in a left-right symmetrical manner.

[0012] Preferably, in the first arrangement area, the first fastening hole and the stress release hole are arranged in a staggered manner in a first direction, and in the first arrangement area, the first fastening hole and the stress release hole are arranged in a staggered manner in a second direction, and the first direction is perpendicular to the second direction.

[0013] Preferably, the first arrangement area and the second arrangement area are away from the corresponding edges of the first fixed plate and have a first resting plane, and the first arrangement area and the second arrangement area have a second resting plane.

[0014] Preferably, the first fastening hole and the second fastening hole are through holes.

[0015] Preferably, the first fixed plate and the second fixed plate are the same size, the stress release holes on the first fixed plate and the stress release holes on the second fixed plate correspond one by one, and the inner diameters of the stress release holes on the first fixed plate and the stress release holes on the second fixed plate are the same.

[0016] The utility model discloses the following technical effects are obtained relative to prior art:

[0017] The drill bit quenching frame provided by the utility model, through adopting the elastic holder composed of multiple elastic clamping pieces, the multiple elastic clamping pieces are distributed in the circumferential direction around the axis of the first fastening hole, when the drill bit handle part is inserted into the clamping hole formed by the lower end of the elastic clamping piece, each elastic clamping piece can apply force to the drill bit from different directions, since the uniform circumferential arrangement, the forces can be balanced with each other, so that the center of the drill bit is automatically coincident with the axis of the first fastening hole, thereby ensuring that the drill bit is in the vertical state when initially installed; the side of the lower end of the elastic clamping piece close to the axis of the first fastening hole is in arc line contact with the outer side wall of the drill bit handle part, the contact mode increases the contact area of the elastic clamping piece and the drill bit handle part, and can better fit the outer side wall of the drill bit handle part; when the first fixed plate is pressed close to the second fixed plate, the second fastening hole forms the contraction guiding effect on the lower end of the corresponding elastic clamping piece, so that each elastic clamping piece can more tightly fix the vertical posture of the drill bit handle part to be clamped, which not only enhances the clamping force of the drill bit, but also externally restricts the positions of the elastic clamping piece and the drill bit, prevents the drill bit from tilting due to external factors (such as quenching medium flow impact) during the quenching process, and maintains the vertical posture of the drill bit; when the drill bit is inserted into the clamping hole, the elastic clamping piece will be elastically deformed under the action of the second fastening hole and generate inward clamping force, the elastic clamping force can adapt to the size of the drill bit handle part, even if the drill bit handle part has a certain size tolerance, the drill bit can also be firmly clamped, and during the quenching process, if the drill bit is subjected to external force, the elastic clamping piece will adjust the clamping force through its elastic deformation, always maintaining reliable clamping of the drill bit, reducing the possibility of the drill bit falling; the drill bit stably maintains the vertical fixed posture and is not easy to fall, can prevent the drill bit from falling into the quenching furnace during the quenching process, and ensures the safety of the quenching furnace. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating creative labor.

[0019] Figure 1 The structure schematic view of the first fixed plate in the drill bit quenching frame provided by the utility model is provided.

[0020] Figure 2 The structure schematic view of the second fixed plate in the drill bit quenching frame provided by the utility model is provided.

[0021] Figure 3 The structure schematic view of one drill bit to be clamped in the drill bit quenching frame provided by the utility model is provided.

[0022] Figure 4The utility model provides a first fastening hole and the plan view of corresponding elastic holder in the first fixed plate of drill head quenching frame,

[0023] Figure 5 For Figure 4 The cross section schematic view of structure,

[0024] Figure 6 The utility model provides a second fastening hole's plan view in the second fixed plate of drill head quenching frame,

[0025] Figure 7 For Figure 6 The cross section schematic view of structure.

[0026] In the drawing,

[0027] 10-first fixed plate, 11-first fastening hole, 12-elastic clamping piece, 13-stress release hole, 14-first resting plane, 15-second resting plane,

[0028] 20-second fixed plate, 21-second fastening hole,

[0029] 30-the handle portion of the drill to be clamped. Specific embodiments

[0030] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0031] The utility model aims at providing a drill head quenching frame to solve the problems in the prior art, so that the drill head can be kept in a stable vertical fixed posture, the falling risk is reduced, and the safety of the quenching furnace is ensured.

[0032] To make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail in conjunction with the drawings and specific embodiments.

[0033] Embodiment one

[0034] The embodiment provides a drill head quenching frame, mainly but not limited to the quenching use of high speed steel twist drill, such as Figures 1-7As shown, it comprises a first fixed plate 10 and a second fixed plate 20 located below the first fixed plate 10; the lower end of the first fixed plate 10 is fixedly provided with a plurality of elastic clamps, and the first fixed plate 10 is provided with a first fastening hole 11 penetrating up and down at the position corresponding to each elastic clamp; the elastic clamp comprises at least two elastic clamps 12, each elastic clamp 12 is distributed circumferentially around the axis of the corresponding first fastening hole 11, the lower end of the elastic clamp 12 is closer to the axis of the first fastening hole 11 than the upper end of the elastic clamp 12, the lower end of each elastic clamp 12 collectively encloses a clamping hole, and the side of the lower end of each elastic clamp 12 close to the axis of the first fastening hole 11 is in arc line contact with the outer wall of the shank 30 of the drill bit to be clamped; in the direction of the axis of the first fastening hole 11, the upper end of the elastic clamp 12 is located on the outer side of the corresponding first fastening hole 11; the inner diameter of the first fastening hole 11 is not less than the outer diameter of the shank 30 of the drill bit to be clamped, and the inner diameter of the clamping hole of the elastic clamp is not greater than the outer diameter of the shank 30 of the drill bit to be clamped; the second fixed plate 20 is provided with a plurality of second fastening holes 21 penetrating up and down, and the second fastening holes 21 correspond one by one to the elastic clamps; the lower end of each elastic clamp 12 of the elastic clamp is arranged in the second fastening hole 21; when the first fixed plate 10 approaches the second fixed plate 20, the lower end of each elastic clamp 12 of the elastic clamp can approach the axis of the corresponding first fastening hole 11 under the constraint of the second fastening hole 21.

[0035] By adopting the elastic holder composed of multiple elastic clamping pieces 12, the multiple elastic clamping pieces 12 are distributed in the circumferential direction around the axis of the first fastening hole 11, when the drill handle is inserted into the clamping hole enclosed by the lower ends of the elastic clamping pieces 12, each elastic clamping piece 12 can exert force on the drill from different directions, and due to the uniform circumferential arrangement, these forces can balance each other, so that the center of the drill automatically coincides with the axis of the first fastening hole 11, thereby ensuring that the drill is in a vertical state when initially installed; the side of the lower end of the elastic clamping piece 12 close to the axis of the first fastening hole 11 is in arc line contact with the outer side wall of the drill handle, this contact mode increases the contact area of the elastic clamping piece 12 and the drill handle, and can better fit the outer side wall of the drill handle; when the first fixed plate 10 is pressed close to the second fixed plate 20, the second fastening hole 21 forms a contraction guiding effect on the lower end of the corresponding elastic clamping piece 12, so that each elastic clamping piece 12 can more tightly realize the fixation of the vertical posture of the drill handle to be clamped, which not only enhances the clamping force on the drill, but also externally constrains the position of the elastic clamping piece 12 and the drill, preventing the drill from tilting due to external factors (such as flow impact of quenching medium) during quenching, and maintaining the vertical posture of the drill; when the drill is inserted into the clamping hole, the elastic clamping piece 12 will be elastically deformed under the action of the second fastening hole 21 and generate an inward clamping force, this elastic clamping force can adapt to the size of the drill handle, even if there is a certain size tolerance of the drill handle, it can also firmly clamp the drill, and during quenching, if the drill is subjected to external force, the elastic clamping piece 12 will adjust the clamping force through its elastic deformation, always maintaining reliable clamping of the drill, reducing the possibility of the drill falling; the drill stably maintains a vertical fixed posture and is not easy to fall, which can prevent the drill from falling into the quenching furnace during quenching, ensuring the safety of the quenching furnace.

[0036] Specifically, the drill quenching rack of the embodiment is simple to assemble and disassemble the drill, the drill is placed in the first fastening hole 11, by lifting the lifting rod, the weight of each drill and the first fixed plate 10 will move it in the direction close to the second fixed plate 20, and the clamping and locking of each elastic clamping piece 12 on the drill is realized under the action of the second fastening hole 21; the drill quenching rack of the embodiment can be reversed to disassemble the drill (if necessary, the knock-pressing action can be used to assist the first fixed plate 10 and the second fixed plate 20 to separate, at this time the locking force of the second fastening hole 21 on each elastic clamping piece 12 is weakened, so that the disassembly of the drill can be completed); the drill quenching rack of the embodiment can effectively fix the position and posture of the drill during quenching, thereby reducing the degree of deformation of the drill and reducing the damage to the quenching furnace caused by falling during quenching.

[0037] Among them, about the structure of the first fixed plate 10 and the second fixed plate 20 used in cooperation during quenching:

[0038] In the optional solution of the embodiment, preferably, the second fixed plate 20 is fixedly provided with a boom, and the first fixed plate 10 is provided with a through hole through which the boom can pass.

[0039] Among them, regarding the setting of the first fixed plate 10 and the second fixed plate 20 to prevent deformation of itself during quenching:

[0040] In the optional solution of the embodiment, preferably, as shown in Figure 1 and Figure 2 A plurality of stress release holes 13 for reducing plate deformation are arranged on the first fixed plate 10 and the second fixed plate 20. During quenching of the drill bit, heat and thermal stress will be generated. If these stresses cannot be released in time, the fixed plate will be deformed. The stress release hole 13 can make the plate absorb and disperse the stress through the slight deformation of the material around the hole when heated, effectively reduce the degree of deformation of the plate due to thermal stress, ensure the flatness and precision of the fixed plate, and further ensure that the drill bit can maintain a stable fixed posture during quenching.

[0041] Among them, regarding the related setting of the elastic clamping piece 12:

[0042] In the optional solution of the embodiment, preferably, as shown in Figures 3-5 The outer side wall of the elastic clamping piece 12 away from the axis of the first fastening hole 11 is a smooth curved surface. The design of the smooth curved surface helps the elastic clamping piece 12 to deform more smoothly when subjected to external force. When the first fixed plate 10 and the second fixed plate 20 are relatively close, the elastic clamping piece 12 can be more uniformly close to the axis direction of the first fastening hole 11 under the constraint of the second fastening hole 21, thereby better adapting to drill bits of different diameters and realizing stable clamping of the drill bit.

[0043] In the optional solution of the embodiment, preferably, as shown in Figure 4 The elastic holder includes four elastic clamping pieces 12.

[0044] Among them, regarding the related setting of the first fixed plate 10 and the second fixed plate 20:

[0045] In the optional solution of the embodiment, preferably, as shown in Figure 1As shown, the first fixed plate 10 has a first arrangement area and a second arrangement area; the first arrangement area and the second arrangement area are both provided with first fastening holes 11 and elastic clamps; the first fastening holes 11 and the elastic clamps in the first arrangement area are distributed in a left-right symmetrical manner with the first fastening holes 11 and the elastic clamps in the second arrangement area. Such symmetrical arrangement can make full use of the space of the first fixed plate 10, reasonably arrange multiple elastic clamps, clamp more drill bits for quenching treatment in limited space, and improve the working efficiency and carrying capacity of the quenching rack; the symmetrical structure has good symmetry and regularity, which facilitates the positioning and operation of the operator when installing and dismounting the drill bits, reduces the operation difficulty, and improves the working efficiency.

[0046] In the optional solution of the present embodiment, preferably, as shown in Figure 1 In the first arrangement area, the first fastening holes 11 and the stress release holes 13 are arranged in a staggered manner in the first direction; and in the second arrangement area, the first fastening holes 11 and the stress release holes 13 are arranged in a staggered manner in the second direction; the first direction is perpendicular to the second direction (the first direction and the second direction correspond to the length direction and the width direction of the first fixed plate 10, for example, the first direction corresponds to the length direction). The staggered arrangement enables the stress release holes 13 to more evenly disperse the stress around the first fastening holes 11 caused by the clamping of the drill bits and the quenching process, and the stress release holes 13 are arranged in different directions, which can relieve the stress concentration in the plate in all directions, further prevent the first fixed plate 10 from deforming due to uneven stress, ensure the stability of the drill bit fixation, and reduce the risk of drill bit falling caused by the deformation of the fixed plate.

[0047] In the optional solution of the present embodiment, preferably, as shown in Figure 1 The first arrangement area and the second arrangement area are both provided with a first resting plane 14 away from the corresponding edge of the first fixed plate 10; and the first arrangement area and the second arrangement area are both provided with a second resting plane 15. The first resting plane 14 and the second resting plane 15 are arranged to facilitate the cooperation with the temporary placement rack, so as to realize the stable support of the temporary placement rack.

[0048] In the optional solution of the present embodiment, preferably, the first fastening holes 11 and the second fastening holes 21 are both through holes.

[0049] In the optional solution of the present embodiment, preferably, as shown in Figure 1 and Figure 2As shown, the first fixing plate 10 and the second fixing plate 20 are of the same size, each stress release hole 13 on the first fixing plate 10 corresponds to a stress release hole 13 on the second fixing plate 20, and the inner diameter of the stress release hole 13 on the first fixing plate 10 is the same as that of the stress release hole 13 on the second fixing plate 20. The stress release holes 13 on the first fixing plate 10 and the second fixing plate 20 correspond to each other and have the same inner diameter, so that the stress generated during quenching can be uniformly and consistently released, which helps to reduce the deformation caused by stress difference, and makes the two fixing plates work better together to stably clamp the drill bit and ensure the position accuracy of the drill bit during quenching.

[0050] The principle and implementation mode of the present application are described by using specific examples in the present application, and the above examples are only used to help understand the method and core idea of the present application. Meanwhile, for those skilled in the art, the specific implementation mode and application range will be changed according to the idea of the present application. In conclusion, the content of the present application should not be understood as a limitation of the present application.

Claims

1. A drill bit quench rack characterized by: The first fixed plate and the second fixed plate located below the first fixed plate; The lower end of the first fixed plate is fixedly provided with a plurality of elastic clamps, and the first fixed plate is provided with a first fastening hole penetrating up and down at a position corresponding to each elastic clamp; the elastic clamp comprises at least two elastic clamps, each elastic clamp is distributed circumferentially around the axis of the corresponding first fastening hole, the lower end of the elastic clamp is closer to the axis of the first fastening hole than the upper end of the elastic clamp, the lower end of each elastic clamp collectively encloses a clamping hole, and the side of the lower end of each elastic clamp close to the axis of the first fastening hole is in arc line contact with the outer side wall of the handle of the drill bit to be clamped; in the direction of the axis of the first fastening hole, the upper end of the elastic clamp is located on the outer side of the corresponding first fastening hole; the inner diameter of the first fastening hole is not less than the outer diameter of the handle of the drill bit to be clamped, and the inner diameter of the clamping hole of the elastic clamp is not greater than the outer diameter of the handle of the drill bit to be clamped; The second fixed plate is provided with a plurality of second fastening holes penetrating up and down, and the second fastening holes correspond to the elastic clamps one by one; the lower end of each elastic clamp of the elastic clamp is arranged in the second fastening hole; when the first fixed plate is close to the second fixed plate, the lower end of each elastic clamp of the elastic clamp can be close to the axis of the corresponding first fastening hole under the constraint of the second fastening hole.

2. The drill bit quench rack of claim 1, wherein: The second fixed plate is fixedly provided with a boom, and the first fixed plate is provided with a through hole, and the boom can pass through the through hole.

3. The drill bit quench rack of claim 1, wherein: A plurality of stress release holes for reducing plate deformation are arranged on the first fixed plate and the second fixed plate.

4. The drill bit quench rack of claim 1, wherein: The outer side wall of the elastic clamp away from the axis of the first fastening hole is a smooth curved surface.

5. The drill bit quench rack of claim 1, wherein: The elastic clamp comprises four elastic clamps.

6. The drill bit quench rack of claim 3, wherein: The first fixed plate has a first arrangement area and a second arrangement area; the first arrangement area and the second arrangement area are provided with the first fastening hole and the elastic clamp; Each first fastening hole and each elastic clamp in the first arrangement area are distributed in left-right symmetry with each first fastening hole and each elastic clamp in the second arrangement area.

7. The drill bit quench rack of claim 6, wherein: In the first direction, the first fastening holes and the stress release holes in the first arrangement area are arranged in turn and staggered; and in the second direction, the first fastening holes and the stress release holes in the first arrangement area are arranged in turn and staggered; The first direction is perpendicular to the second direction.

8. The drill bit quench rack of claim 6, wherein: The first arrangement area and the second arrangement area have a first resting plane from the corresponding edge of the first fixed plate; The first arrangement area and the second arrangement area have a second resting plane.

9. The drill bit quench rack of claim 1, wherein: The first fastening hole and the second fastening hole are through holes.

10. The drill bit quench rack of claim 3, wherein: The first fixed plate and the second fixed plate have the same size, each stress release hole on the first fixed plate corresponds to the stress release hole on the second fixed plate, and the inner diameter of the stress release hole on the first fixed plate is the same as the inner diameter of the stress release hole on the second fixed plate.

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