Machine clamping type deep hole gun drill

Abstract

The utility model relates to a machining tool, in particular to a machine clamping type deep hole gun drill which comprises a connecting piece arranged at one end of a hard alloy block, the connecting piece is connected with a locking piece installed on a gun drill body, and the hard alloy block is inserted and moved on the gun drill body. When the gun drill main body is used for installing the hard alloy block, the locking and limiting structure acts between the hard alloy block and the gun drill main body, so that the hard alloy block can be conveniently and quickly installed in place in the installation process, and the installation efficiency of the hard alloy block is greatly improved; the locking and limiting structure not only can ensure that the hard alloy block is stably and firmly fixed in the gun drill main body, but also enables the installation process to be more efficient, simpler and more convenient, reduces possible deviation and errors during operation, in addition, the structure also has remarkable stability, and the hard alloy block can be prevented from being damaged when being installed. Through the accurate design and structure, it can be ensured that the device is not prone to loosening.

Description

TECHNICAL FIELD

[0001] The utility model relates to a machining tool, in particular to a machine clamp type deep hole gun drill. BACKGROUND

[0002] The machine clamp type deep hole gun drill is a kind of drilling tool specially used for processing deep hole, mainly used for the drilling of the hole with higher precision requirement in metal processing, and its design structure is similar to gun shape, with slender drill bit and lengthened handle, can cut into the deep hole and cut, compared with traditional drill bit, machine clamp type deep hole gun drill not only has higher cutting precision and efficiency, but also can effectively remove the cutting chips generated in the cutting process, to ensure the stability in the processing.

[0003] The drill bit is fixed on the machine tool spindle by the machine clamp, and the fixing mode can enhance the rigidity and stability of the drill bit in the processing, avoid the deviation or vibration of the drill bit, and the machine clamp type deep hole gun drill can accurately drill deep hole during use, and usually needs to cooperate with cooling liquid for cooling and lubrication, to reduce friction and cutting heat, prolong the service life of the tool, and the machine clamp type deep hole gun drill is usually applied in automobile, aerospace, die manufacturing and other industries, which need to process complex deep hole with high precision to ensure the precision and surface quality of the hole.

[0004] During the use of machine clamp type deep hole gun drill, alloy blocks are usually installed at the end of the drill bit to improve the cutting sharpness of the drill bit and prolong the service life, and the alloy blocks are usually made of high-hardness and high-wear-resistant materials, such as hard alloy and superhard material; the alloy blocks can effectively reduce wear and maintain the sharpness of the cutting edge during drilling, thereby improving the cutting efficiency and processing quality of the drill bit, and the wear resistance of the alloy blocks enables them to work for a long time in high-temperature and high-pressure processing environment, avoiding the precision decline and production downtime caused by excessive wear of the drill bit, thereby prolonging the service life of the tool.

[0005] However, although the alloy blocks can significantly improve the performance of the drill bit, there are still some challenges and inconveniences in installing the alloy blocks, first, the installation position of the alloy block needs to be very accurate, and any small error may cause unstable cutting of the drill bit, even affect the precision of the whole processing process, which requires the operator in the processing process to have high level of technology and experience to ensure that the alloy block is firmly and accurately fixed at the end of the drill bit, secondly, the alloy block is usually installed by riveting or bolt connection, and the drill bit usually has multiple alloy blocks, which need to be installed one by one and kept firmly during installation, thereby causing the installation work to be inconvenient and affecting the processing use. SUMMARY

[0006] The utility model discloses a machine clamp formula deep hole gun drill to solve the problem of the above background technology.

[0007] To realize above -mentioned purpose, the utility model provides the following technical scheme:

[0008] A machine clamp formula deep hole gun drill, including gun drill main part, the clamping handle of integrative forming in the one end of gun drill main part and the multiple hard alloy blocks of setting in the other end of gun drill main part, the hard alloy block is installed on the gun drill main part through locking limit structure, the locking limit structure includes:

[0009] The connecting piece of setting in the one end of hard alloy block, the connecting piece is connected with the locking piece of installing on the gun drill main part, when the hard alloy block is inserted and is connected and moves on the gun drill main part, the connecting piece drives the locking piece and locks or loosens the hard alloy block and adjusts;

[0010] The limiting piece of setting on the gun drill main part, the limiting piece is abutted with the hard alloy block, is used for abutment spacing to the installation position of the hard alloy block on the gun drill main part.

[0011] As above described a machine clamp formula deep hole gun drill: the cutting end of gun drill main part is set up with multiple insertion slot, and the threaded hole and the embedded slot are arranged on the gun drill main body respectively at the insertion slot part.

[0012] As above described a machine clamp formula deep hole gun drill: the hard alloy block is inserted in the insertion slot, and the convex strip of the hard alloy block's both sides integrative formation and the insertion slot adaptation insertion.

[0013] As above described a machine clamp formula deep hole gun drill: the connecting piece includes the sliding slot of setting in the insertion end of hard alloy block, the rack of setting on the hard alloy block at the one side of sliding slot and the clamping groove of setting on the hard alloy block;

[0014] The clamping groove is located at one end of the sliding groove.

[0015] As above described a machine clamp formula deep hole gun drill: the locking piece includes the installation component of installing on the gun drill main body and the locking wheel of setting on the installation component, and the outer wall annular array of locking wheel is set up with the gear groove of the rack engagement;

[0016] The eccentric hole is set up in the eccentricity of locking wheel, and the locking wheel is set up with the limit hole on the inner wall of eccentric hole.

[0017] As above described a machine clamp formula deep hole gun drill: the installation component includes the sleeve of rotating in the eccentric hole, the convex ring of integrative formation in the outer wall of sleeve and with the limit hole rotation connection;

[0018] Further comprising a resisting cylinder arranged on the inner wall of the sleeve and an inner hole bolt inserted into the sleeve and abutting against one side of the resisting cylinder, the inner hole bolt is threadedly connected with the insertion slot.

[0019] The machine clamp type deep hole gun drill as described above, wherein the limiting member comprises a spring steel strip embedded in the threaded hole and a clamping head arranged on the spring steel strip, and the clamping head is adapted to be clamped with the clamping slot.

[0020] Compared with the prior art, the machine clamp type deep hole gun drill has the following beneficial effects:

[0021] When the hard alloy block is installed, the locking and limiting structure acts between the hard alloy block and the gun drill body, so that the hard alloy block can be conveniently and quickly installed in place during the installation process, thereby greatly improving the installation efficiency of the hard alloy block.

[0022] During the cutting process of the gun drill, the hard alloy block contacts the workpiece, and the contact pressure between the hard alloy block and the workpiece gradually increases with the continuous action of the cutting force. This process can promote the connection between the hard alloy block and the locking and limiting structure to be more compact through force transmission, thereby improving the stable fixing effect of the hard alloy block during cutting. This tightening effect generated by pressure effectively enhances the bonding force between the hard alloy block and the locking and limiting structure, thereby ensuring that the hard alloy block will not loosen or shake due to vibration or other external forces, and avoiding the risk of reduced cutting precision and damaged processing quality due to loose connection. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the machine clamp type deep hole gun drill as a whole.

[0024] Figure 2 It is a structural schematic diagram of the cutting end of the machine clamp type deep hole gun drill.

[0025] Figure 3 It is a structural schematic diagram of the cutting end of the machine clamp type deep hole gun drill in another state.

[0026] Figure 4 It is a structural schematic diagram of the cutting end of the machine clamp type deep hole gun drill in another state.

[0027] Figure 5It is the structure schematic view of locking and limiting structure in machine clamp type deep hole gun drill.

[0028] Figure 6 It is the structure schematic view of alloy block in machine clamp type deep hole gun drill.

[0029] Figure 7 It is the structure schematic view of locking part in machine clamp type deep hole gun drill.

[0030] Figure 8 It is the structure schematic view of locking wheel in machine clamp type deep hole gun drill.

[0031] Figure 9 It is the structure schematic view of sleeve and inner hole bolt in machine clamp type deep hole gun drill.

[0032] Figure 10 It is the structure schematic view of limiting part in machine clamp type deep hole gun drill.

[0033] In the figure: 1, gun drill main body; 2, clamping handle; 3, plug-in slot; 4, threaded hole; 5, embedded slot; 6, hard alloy block; 7, convex strip; 8, sliding groove; 9, rack; 10, clamping groove; 11, locking wheel; 12, tooth groove; 13, eccentric hole; 14, limiting hole; 15, sleeve; 16, convex ring; 17, abutting cylinder; 18, inner hole bolt; 19, spring steel belt; 20, clamping head. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0035] Please refer to Figures 1-4 In the embodiments of the present application, a machine clamp type deep hole gun drill comprises a gun drill main body 1, a clamping handle 2 integrally formed at one end of the gun drill main body 1, and a plurality of hard alloy blocks 6 arranged at the other end of the gun drill main body 1. The hard alloy blocks 6 are installed on the gun drill main body 1 through a locking and limiting structure. The locking and limiting structure comprises:

[0036] A connecting part arranged at one end of the hard alloy block 6 is connected with a locking part installed on the gun drill main body 1. When the hard alloy block 6 is inserted and moved on the gun drill main body 1, the connecting part drives the locking part to lock or loosen the hard alloy block 6.

[0037] A limiting part arranged on the gun drill main body 1 is in abutment with the hard alloy block 6, and is used for abutment limiting of the installation position of the hard alloy block 6 on the gun drill main body 1.

[0038] In this embodiment, when the hard alloy block 6 is installed at the cutting end of the gun drill body 1, the locking and limiting structure acts between the hard alloy block 6 and the gun drill body 1, which can significantly improve the convenience of installing the hard alloy block 6 on the gun drill body 1. In the traditional installation process, the connection between the hard alloy block 6 and the gun drill body 1 often needs complex operation and accurate butt joint. However, the introduction of the locking and limiting structure enables the hard alloy block 6 to be quickly and accurately installed on the gun drill body 1, greatly shortening the installation time. In addition, the locking and limiting structure not only improves the installation efficiency, but also enhances the firmness of the hard alloy block 6 on the gun drill body 1, ensuring that the hard alloy block 6 will not loosen or deviate during cutting.

[0039] The connecting piece and the locking piece on the hard alloy block 6 cooperate with each other, which ensures the fastening effect of the hard alloy block 6. When the gun drill body 1 cuts the workpiece, the hard alloy block 6 will be subjected to cutting force and will be close to one end of the clamping handle 2 and exert pressure. With the continuous action of the cutting force, when the hard alloy block 6 is subjected to pressure, the connection between the hard alloy block 6 and the gun drill body 1 is further strengthened with the help of the locking piece. This design enables the locking piece to gradually set the hard alloy block 6 more tightly on the gun drill body 1 under the action of pressure as the cutting force increases. With the reduction of the gap between the hard alloy block 6 and the gun drill body 1, the shaking of the hard alloy block 6 caused by loosening or vibration during cutting is avoided, thereby effectively preventing the collapse phenomenon from occurring.

[0040] At the same time, the limiting piece can accurately limit the position of the hard alloy block 6 after the hard alloy block 6 is installed on the gun drill body 1, ensuring that the hard alloy block 6 maintains a stable position during use. This design has great practical significance. Especially in the case of the gun drill body 1 being vertically suspended, the limiting piece can effectively prevent the hard alloy block 6 from falling off the gun drill body 1, avoiding possible installation errors and tool damage. With the double protection of limiting and locking, the hard alloy block 6 can be firmly set on the gun drill body 1, improving the stability and safety of the entire installation process.

[0041] Please refer to Figure 3 , Figure 4 and Figure 6 , as a further scheme of the present utility model, the cutting end of the gun drill body 1 is provided with a plurality of plug-in grooves 3, and the gun drill body 1 at the plug-in groove 3 part is respectively provided with a threaded hole 4 and an embedded groove 5.

[0042] The hard alloy block 6 is plugged into the plug-in groove 3, and the hard alloy block 6 is integrally formed with a convex strip 7 on both sides which is adapted to plug into the plug-in groove 3.

[0043] In the embodiment, in the design of the gun drill body 1, the structural cooperation between the insertion groove 3 and the hard alloy block 6 is crucial, the insertion groove 3 is arranged at the cutting end of the gun drill body 1, is designed to be exquisite and has a specific T-shaped shape, is matched with the hard alloy block 6 and the convex strips 7 on both sides of the hard alloy block 6, the cooperation structure can ensure that the hard alloy block 6 is accurately positioned during installation and is tightly connected through the interaction between the convex strips 7 and the insertion groove 3, when the installation process of the hard alloy block 6 and the gun drill body 1 starts, the convex strips 7 of the hard alloy block 6 are inserted into the insertion groove 3, the design not only ensures that the hard alloy block 6 is stably installed on the gun drill body 1, but also effectively limits any unnecessary movement of the hard alloy block 6 in the radial direction of the gun drill body 1, further improving the stability of the hard alloy block 6 after installation.

[0044] Please refer to Figures 5-9 , as a further scheme of the utility model, the connecting piece includes a sliding groove 8 arranged at the insertion end of the hard alloy block 6, a rack 9 arranged on the hard alloy block 6 at one side of the sliding groove 8 and a clamping groove 10 arranged on the hard alloy block 6.

[0045] The clamping groove 10 is located at one end of the sliding groove 8.

[0046] The locking piece includes a mounting component mounted on the gun drill body 1 and a locking wheel 11 arranged on the mounting component, and a tooth groove 12 engaged with the rack 9 is arranged on the outer wall of the locking wheel 11 in an annular array.

[0047] An eccentric hole 13 is arranged at the eccentric position of the locking wheel 11, and a limiting hole 14 is arranged on the locking wheel 11 in the inner wall of the eccentric hole 13.

[0048] The mounting component includes a sleeve 15 rotating in the eccentric hole 13, a convex ring 16 integrally formed on the outer wall of the sleeve 15 and rotationally connected with the limiting hole 14.

[0049] Further comprising a butt contact cylinder 17 arranged on the inner wall of the sleeve 15 and an inner hole bolt 18 inserted into the sleeve 15 and abutting on one side of the butt contact cylinder 17, and the inner hole bolt 18 is threadedly connected with the insertion groove 3.

[0050] In this embodiment, the function of the locking wheel 11 is crucial, which ensures the stable installation of the hard alloy block 6 on the gun drill body 1 through the rotational installation structure between the eccentric hole 13 at the eccentric position and the sleeve 15, and the convex ring 16 provided on the outer wall of the sleeve 15 in the eccentric hole 13 cooperates with the limiting hole 14 of the locking wheel 11 to ensure that the sleeve 15 cannot move in the axial direction of the locking wheel 11 when rotating in the eccentric hole 13. This structure accurately meets the rotational limiting requirements of the locking wheel 11, so that the rotation of the sleeve 15 can be kept within the set range, avoiding any unnecessary deviation.

[0051] When the hard alloy block 6 is inserted through the insertion slot 3, the locking wheel 11 is accurately guided to the position of the sliding slot 8 opened at one end of the hard alloy block 6. During the insertion of the hard alloy block 6, the rack 9 is engaged with the tooth groove 12 of the locking wheel 11 to produce interaction, and the locking wheel 11 applies additional fastening force to the hard alloy block 6 through its rotational action to ensure that the hard alloy block 6 is stably retained inside the insertion slot 3. Since the position of the locking wheel 11 is limited by the inner hole bolt 18 and cannot move freely on the gun drill body 1, the locking wheel 11 can rotate around the sleeve 15 at the eccentric position instead of around the axis of the locking wheel 11, thereby achieving the locking action on the hard alloy block 6.

[0052] As the insertion force increases when the hard alloy block 6 is inserted into the insertion slot 3, the resistance of the hard alloy block 6 caused by the eccentric rotation of the locking wheel 11 also increases. This design ensures that the locking wheel 11 can gradually increase the fastening force on the hard alloy block 6 during the insertion of the hard alloy block 6, thereby maintaining the stability of the hard alloy block 6 during cutting. More importantly, this gradually increasing locking force can effectively prevent the hard alloy block 6 from loosening or shifting due to vibration or external force, even in the case of high-speed cutting or high-load operation. The hard alloy block 6 can maintain its stability and will not affect the cutting quality or precision due to insecure installation.

[0053] In addition, the eccentric rotation design of the locking wheel 11 not only provides sufficient fastening force, but also effectively avoids the loosening problem that may be caused by traditional fixed methods. When it is necessary to remove the hard alloy block 6 from the gun drill body 1 for replacement, it is only necessary to pull the hard alloy block 6 to disengage the insertion of the insertion slot 3, so that the hard alloy block 6 can be quickly disassembled and replaced. The eccentric rotation locking design of the locking wheel 11 can resist and lock the hard alloy block 6 when it is inserted into the insertion slot 3. When the hard alloy block 6 is pulled in the opposite direction, the resistance and locking force of the hard alloy block 6 caused by the eccentric rotation of the locking wheel 11 will decrease, thereby facilitating the replacement of the hard alloy block 6.

[0054] Please refer to Figure 5 ,Figure 10 As a further scheme of the utility model, the limiting piece comprises a spring steel band 19 embedded in the threaded hole 4 and a clamping head 20 arranged on the spring steel band 19, and the clamping head 20 is adapted to clamp the clamping groove 10.

[0055] In this embodiment, the spring steel band 19 has a springback effect, and when the hard alloy block 6 is inserted into the insertion groove 3, the clamping head 20 accurately designed on the spring steel band 19 is tightly fitted with the clamping groove 10 specially opened on the hard alloy block 6. The function of this clamping mechanism is to firmly arrange the hard alloy block 6 on the predetermined position of the insertion groove 3, avoiding the hard alloy block 6 from slipping out of the insertion groove 3 when the gun drill body 1 is vertically extracted and the hard alloy block 6 is perpendicular to the ground, because there is no limiting effect on the hard alloy block 6. In this way, the hard alloy block 6 can remain stable during the entire use process, avoiding the problem of loosening caused by improper installation or external interference.

[0056] The above embodiments are exemplary but not restrictive, and therefore the technical scheme of the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model, which are all included in the utility model.

Claims

1. A machine clamp type gun drill comprising a gun drill body (1), a clamp shank (2) integrally formed at one end of the gun drill body (1), and a plurality of cemented carbide blocks (6) provided at the other end of the gun drill body (1), characterized in that, The hard alloy block (6) is installed on the gun drill body (1) through a locking and limiting structure, the locking and limiting structure comprises: A connecting piece arranged at one end of the hard alloy block (6), the connecting piece is connected with a locking piece arranged on the gun drill body (1), when the hard alloy block (6) is inserted and moved on the gun drill body (1), the connecting piece drives the locking piece to lock or loosen the hard alloy block (6); A limiting piece arranged on the gun drill body (1), the limiting piece abuts against the hard alloy block (6), and is used for abutting and limiting the installation position of the hard alloy block (6) on the gun drill body (1).

2. A machine clamp type deep hole gun drill according to claim 1, wherein A plurality of insertion grooves (3) are arranged at the cutting end of the gun drill body (1), and a threaded hole (4) and an embedding groove (5) are arranged on the gun drill body (1) at the position of the insertion groove (3).

3. A machine clamp type gun drill according to claim 2, wherein The hard alloy block (6) is inserted into the insertion groove (3), and convex strips (7) integrally formed on the two sides of the hard alloy block (6) are adapted to be inserted into the insertion groove (3).

4. A machine clamp type gun drill according to claim 3, wherein The connecting piece comprises a sliding groove (8) arranged at the insertion end of the hard alloy block (6), a rack (9) arranged on the hard alloy block (6) at one side of the sliding groove (8), and a clamping groove (10) arranged on the hard alloy block (6); The clamping groove (10) is located at one end of the sliding groove (8).

5. A machine clamp type gun drill according to claim 4, wherein The locking piece comprises a mounting component arranged on the gun drill body (1) and a locking wheel (11) arranged on the mounting component, and a tooth groove (12) engaged with the rack (9) is arranged in the outer wall of the locking wheel (11) in an annular array; An eccentric hole (13) is arranged at the eccentric position of the locking wheel (11), and a limiting hole (14) is arranged on the locking wheel (11) in the inner wall of the eccentric hole (13).

6. A machine clamp type gun drill according to claim 5, wherein The mounting component comprises a sleeve (15) rotating in the eccentric hole (13), and a convex ring (16) integrally formed on the outer wall of the sleeve (15) and rotationally connected with the limiting hole (14); Further comprising a contact cylinder (17) arranged in the inner wall of the sleeve (15) and an inner hole bolt (18) inserted into the sleeve (15) and abutting against one side of the contact cylinder (17), and the inner hole bolt (18) is threadedly connected with the insertion groove (3).

7. A machine clamp type gun drill according to claim 6, wherein The limiting piece comprises a spring steel belt (19) embedded in the threaded hole (4) and a clamping head (20) arranged on the spring steel belt (19), and the clamping head (20) is adapted to be clamped with the clamping groove (10).

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