A locking device and a knife holder using the same

Abstract

The present invention relates to a lock knife seat device, specifically to a locking device and a lock knife seat applying the device. The locking device includes a base and a locking assembly. The base is provided with a first chute and a second chute. A clamping member is arranged in the first chute, and an operating member is arranged in the second chute. The two are hinged through a connecting rod. The locking assembly includes a stop member, a first elastic member and a second elastic member. The operating member can move between a locking position and a release position. When in the locking position, the two clamping members clamp the handle to be fixed. The stop member partially protrudes out of the operating member and cooperates with the base to prevent the operating member from moving in the reverse direction. The second elastic member forces the two clamping members to move towards each other to eliminate the gap between them and the handle. Through the structural settings of the stop member and the second elastic member, the present application combines rigid limit with elastic clamping, solving the problem that when the existing lock knife seat adopts fitting and fixing, the handle is prone to move due to the influence of gaps or impacts. The device of the present application has reliable locking and is easy to operate.

Description

Technical Field

[0001] The present invention relates to a tool locking seat device, and more particularly to a locking device and a tool locking seat using the same device. Background Art

[0002] A tool locking seat is a device used to assist in tool replacement. After placing the tool shank in the tool locking seat, it prevents the tool shank from rotating during disassembly and assembly to separate the tool shank from the tool, and then installs a new tool on the tool shank to complete the tool replacement operation.

[0003] The structure of the tool locking seat mainly includes a base and a hole for assembling the tool shank. Generally, a circumferential limiting structure is also provided in the base or the hole to prevent the tool shank from rotating when replacing the tool. Currently, the circumferential limiting structure usually includes forms such as pins, grooves, blocks, or combinations thereof.

[0004] Among them, taking the Chinese utility model patents with application numbers CN201620294876.6 and CN201920021927.1 as examples, for a tool locking seat with a block-shaped circumferential limiting structure, a positioning block is usually provided on the base, and the positioning block can cooperate with the keyway on the tool shank to position the tool shank inserted into the hole and prevent the tool shank from rotating.

[0005] According to the different installation methods of the tool shank, the block-shaped circumferential limiting structure generally has two sub-types. For a tool locking seat with the tool shank's taper facing down, the positioning block is usually fixed or embedded on the base; while for a tool locking seat with the tool shank's taper facing up, the positioning block is usually designed as a structure that can be flipped inside and outside the hole. Before the tool shank is placed, the positioning block is flipped to the outside, and when the tool shank is placed in the hole, the positioning block is flipped from the outside to the inside to cooperate with the keyway on the tool shank.

[0006] For example, the block-shaped circumferential limiting structure of the above tool locking seat restricts the rotation of the tool shank mainly through a rigid fitting method. However, during long-term use, when the positioning block wears or there is an assembly error between the positioning block and the tool rod, it cannot fit well on the tool shank. Such a rigid fitting structure is prone to tool shank movement due to gaps or impacts during tool replacement and is difficult to adjust adaptively, further leading to accelerated wear and affecting tool disassembly and replacement. Therefore, there is an urgent need for a locking device that can achieve reliable locking and is easy to operate. Summary of the Invention

[0007] In order to solve the deficiencies in the prior art, the present invention provides a locking device and a tool locking seat using the same device. Through a reasonable design of the locking device, it makes up for the defect that the existing tool locking seat cannot fit well on the tool shank and is prone to tool shank movement due to gaps or impacts.

[0008] To solve the above technical problems, the present invention adopts the following technical solutions: A locking device includes a base and a chute provided on the base. The chute includes a first chute and a second chute; two clamping members are slidably disposed in the first chute, an operating member is slidably disposed in the second chute, and is hinged to each clamping member through a connecting rod; a locking assembly includes a stop member and a first elastic member. The stop member is attached to the operating member, and the first elastic member abuts between the stop member and the operating member;

[0009] The operating member can move between a locking position and a release position. When the operating member is in the locking position, the two clamping members clamp the piece to be fixed. The stop member partially protrudes from the operating member and cooperates with the base where the chute is located to prevent the reverse displacement of the operating member; The locking assembly further includes a second elastic member, which forces the two clamping members to move towards each other to eliminate the gap between the clamping members and the piece to be fixed.

[0010] As a preferred embodiment, when the operating member is in the release position, the end of the stop member abuts or slidably cooperates with the second chute; when the operating member is in the locking position, the stop member partially protrudes under the action of the first elastic member and abuts against the outer wall of the base to form a rigid limit.

[0011] As a preferred embodiment, the locking assembly further includes an adjusting member attached to the operating member. The adjusting member and the stop member are connected through a transmission member. The adjusting member drives the displacement of the stop member through the transmission member to release the locking of the piece to be fixed.

[0012] As a preferred embodiment, the clamping member is divided into a guiding portion and a positioning portion in the length direction; the guiding portion is away from the piece to be fixed, and the side wall is in sliding contact with the first chute for guiding and restricting lateral offset; the side wall of the positioning portion has a clearance fit with the first chute, and the cross-sectional shape of the positioning portion in the length direction matches the keyway on the piece to be fixed.

[0013] As a preferred embodiment, at the opening of the first chute and / or the second chute, two oppositely arranged inwardly turned limiting portions are formed, and a limiting step matching the limiting portion is formed on the clamping member to perform vertical limiting and fixing on the piece to be fixed.

[0014] As a preferred embodiment, the locking assembly further includes a fixing block located at the outer edge of the base; the second elastic member is disposed in the first chute, and its two ends respectively abut against the clamping member and the fixing block to force the two clamping members to move towards each other.

[0015] As a preferred embodiment, the locking assembly further includes a rod and an L-shaped member. The L-shaped member includes a vertical arm and a horizontal arm. The rod passes through the vertical arm and is connected to the stop member. The L-shaped member is slidably fitted on the rod. The second elastic member is sleeved on the rod and abuts between the end of the rod and the L-shaped member to eliminate the gap between the horizontal arm of the L-shaped member and the outer wall of the base.

[0016] As a preferred embodiment, when the operating member is in the release position, the bottom end of the horizontal arm abuts against or slidably mates with the second chute, and the end of the horizontal arm abuts against the wall of the cavity of the operating member that houses the stop member; when the operating member is in the locking position, the end of the horizontal arm abuts against the outer wall of the base.

[0017] As a preferred embodiment, a threaded section is provided on the rod, and a nut is threadedly connected to the end of the rod. The second elastic member is sleeved on the rod and abuts between the nut and the vertical arm, and the pre-tightening force of the second elastic member is adjusted by the axial displacement of the nut; alternatively, the rod has a bolt head, and the rod and the stop member are threadedly connected, and the second elastic member abuts between the bolt head and the L-shaped member, and the pre-tightening force of the second elastic member is adjusted by the axial displacement of the bolt head.

[0018] The present application also provides a tool holder lock, which includes the above-mentioned locking device, a base, and a hole formed on the surface of the base. The hole is used to accommodate the tool shank, and the first chute and the second chute are arranged around the hole.

[0019] First, in the locking device provided by the present invention, through the arrangement of the stop member and the second elastic member, double locking of the tool shank is achieved; when the operating member is in the locking position, the clamping member clamps the tool shank, the stop member and the base cooperate to form a rigid limit, and the clamping force applied by the second elastic member further enhances the locking effect, effectively solving the problem that the tool shank of the existing tool holder lock is prone to crosstalk due to gaps or impacts when using the rigid fitting and fixing method, and improving the stability of tool replacement.

[0020] Second, in the locking device of the present invention, the operating member drives the double clamping members to move synchronously through the connecting rod, and the limiting of the stop member and the clamping adjustment of the elastic member can be completed by a single sliding. For example, when the operating member moves from the release position to the locking position, the clamping of the clamping member, the extension of the stop member, and the expansion and contraction of the elastic member are completed synchronously, which is convenient for quickly replacing the tool shank and improving the efficiency of tool disassembly and assembly.

[0021] Third, in an embodiment of the present invention, the locking assembly includes an L-shaped member and a rod. When there is a gap between the clamping member and the tool shank, the moving distance of the operating member increases, causing a gap between the stop member and the outer wall of the base after the stop member extends. Through the arrangement of the L-shaped member and the rod in the present application, the L-shaped member can automatically compensate for the gap through the elastic deformation of the second elastic member, giving play to the double locking effect of the locking assembly.

[0022] Fourth, in an embodiment of the present invention, a thread is provided on the rod, and the pre-compression amount of the second elastic member can be adjusted by screwing the nut or the bolt head, and the pre-tightening force on the L-shaped member and the clamping force on the tool shank can be adjusted. For the second elastic member whose elasticity decreases or partially fails due to long-term use, the pre-tightening force on the L-shaped member can be restored by adjusting the pre-compression amount, ensuring the stability of the device during long-term use.

[0023] Fifthly, in the present invention, the clamping member cooperating with the sliding groove is divided into a guiding portion and a positioning portion. The guiding portion is in close contact with the side wall of the sliding groove to ensure the linear guiding and torsional stiffness resistance of the clamping member, effectively resisting the rotational force of the tool handle; the positioning portion has a clearance fit with the side wall of the sliding groove to avoid direct contact with the sliding groove, and the wear is mainly concentrated on the guiding portion, realizing the decoupling of positioning and guiding / wear areas, reducing the wear of the positioning portion, and ensuring the fitting accuracy with the tool handle during long-term use. Brief Description of the Drawings

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 Schematic structural diagram of one embodiment of the locking device and the tool holder seat of the present invention;

[0026] Figure 2 Schematic diagram of the cooperation state of the locking device of the present invention with the tool handle;

[0027] Figure 3 Schematic diagram of the tool handle structure provided by the present invention;

[0028] Figure 4 Schematic diagram of the internal structure of the operating member provided by the present invention;

[0029] Figure 5 Cross-sectional view of one embodiment of the operating member provided by the present invention;

[0030] Figure 6 Schematic diagram of one cooperation state of the stop member and the base provided by the present invention;

[0031] Figure 7 Cross-sectional view of the operating member and the stop member and the corresponding sliding grooves provided by the present invention, where (a) is the cross-sectional view of the operating member and the first sliding groove, and (b) is the cross-sectional view of the stop member and the second sliding groove;

[0032] Figure 8 Schematic diagram of the clamping member and the first sliding groove structure provided by the present invention;

[0033] Figure 9 Schematic diagram of one cooperation state of the stop member and the base provided by the present invention;

[0034] Figure 10 Cross-sectional view of another embodiment of the operating member provided by the present invention;

[0035] Figure 11Schematic diagram of one mating state of the L-shaped part and the base provided by the present invention;

[0036] Markings in the figure: 10 - clamping part, 11 - guiding part, 12 - positioning part, 20 - operating part, 30 - connecting rod, 40 - base, 41 - first chute, 411 - first section, 412 - second section, 413 - limiting part, 414 - limiting step, 4141 - first step part, 4142 - second step part, 42 - second chute, 50 - tool handle, 51 - keyway, 60 - locking assembly, 61 - stop part, 62 - first elastic part, 63 - second elastic part, 64 - transmission part, 641 - runner, 65 - rod, 66 - L-shaped part, 661 - vertical arm, 662 - horizontal arm, 67 - adjusting part, 671 - bump, 68 - nut, 70 - fixing block, 80 - hole, D - gap. Detailed implementation manners

[0037] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or part referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0039] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0040] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two parts. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0041] Example 1, please refer to Figures 1 to 8 , Figure 1 which shows a locking device of the present application. The locking device includes two clamping members 10, an operating member 20, and a base 40. A first chute 41 and a second chute 42 are formed on the base 40. The projections of the first chute 41 and the second chute 42 on the horizontal plane are orthogonally matched. The clamping member 10 is slidably disposed in the first chute 41. The first chute 41 includes a spaced first section 411 and a second section 412. There is a clamping member 10 in each of the first section 411 and the second section 412. The two clamping members 10 are used to clamp a workpiece to be fixed between the first section 411 and the second section 412. The workpiece to be fixed can be a tool shank 50 of any form. In this embodiment, taking Figures 2 to 3 the HSK tool shank shown as an example, the clamping member 10 is designed as a block structure that mates with the keyway 51 of the tool shank 50.

[0042] Please refer to Figure 1 and Figure 2 , the operating member 20 is slidably disposed in the second chute 42. By sliding the operating member 20, the clamping member 10 is controlled to clamp and unlock the tool shank 50. In this embodiment, a connecting rod 30 is provided on the top surfaces of the operating member 20 and the clamping member 10. The two ends of the connecting rod 30 are respectively hinged to the clamping member 10 and the operating member 20 through pins, thereby constructing a stable linkage structure. When the operating member 20 slides in the second chute 42, for example, from the release position close to the tool shank 50 to the locking position away from the tool shank 50 (such as the positions shown in Figure 1 and 2 ), the two clamping members 10 will close or tend to close under the drive of the operating member 20 to clamp the tool shank 50; conversely, when the operating member 20 moves from the locking position away from the tool shank 50 to the release position close to the tool shank 50, the two clamping members 10 will release the tool shank 50 under the drive of the operating member 20.

[0043] In this embodiment, the operating member 20 is exemplified by a block structure. In some embodiments of the present application, part or the end of the operating member 20 can also be designed as a handle convenient for gripping to facilitate direct manual operation by an operator, or designed as a joint convenient for connection with an external driving device, such as a threaded rod, a flange joint, etc., to achieve automatic drive control through external drive.

[0044] Please refer to Figure 4, the locking assembly 60 includes a stopper 61 and a first elastic member 62. A cavity for accommodating the stopper 61 and the first elastic member 62 is provided in the operating member 20. The stopper 61 is slidably engaged with the operating member 20, and the first elastic member 62 is abutted and arranged between the stopper 61 and the inner wall of the operating member 20. In this embodiment, the first elastic member 62 is a compression spring. In some embodiments of the present application, the first elastic member 62 may also be an elastic rubber sleeve. When the operating member 20 is in the release position, the stopper 61 retracts into the operating member 20, the first elastic member 62 is in a contracted state, and in order to improve the smoothness of the movement of the operating member 20, the lower end of the stopper 61 is smoothly arranged, and the stopper 61 is slidably engaged with the bottom of the second chute 42 in the second chute 42.

[0045] Please refer to Figure 4 and Figure 6 , when the operating member 20 is in the locking position, the stopper 61 partially protrudes from the operating member 20 under the drive of the first elastic member 62. The part of the stopper 61 protruding from the operating member 20 is limited by cooperation with the base 40. In this embodiment, in the locking position, the stopper 61 is limited by abutting against the outer wall of the base 40. When the clamping member 10 opens towards the outer edge of the base 40 under an external force, the operating member 20 will move towards the release position close to the tool handle 50 under the action of the connecting rod 30. The stopper 61 abutting against the outer wall of the base 40 restricts the movement of the operating member 20 to achieve rigid limitation of the clamping member 10 to lock the tool handle 50. In some embodiments of the present application, the stopper 61 may also protrude from the side wall of the operating member 20, and a recess cooperating with the end of the stopper 61 is provided on the inner wall of the second chute 42. The locking between the stopper 61 and the base 40 is achieved by the end of the stopper 61 being embedded in the recess.

[0046] Please refer to Figures 1 to 4 , the locking assembly 60 further includes a second elastic member 63 and a fixing block 70 located at the outer edge of the base 40. In this embodiment, the second elastic member 63 is a compression spring. In some embodiments of the present application, the second elastic member 63 may also be an elastic rubber sleeve; the second elastic member 63 includes an elastic member A and an elastic member B, which are respectively arranged in the first section 411 and the second section 412, and the two ends of the elastic member A and the elastic member B are respectively abutted against the corresponding clamping member 10 and the fixing block 70. When the tool handle 50 needs to be replaced, the operating member 20 moves from the locking position to the release position, and the two clamping members 10 respectively squeeze the elastic member A and the elastic member B, so that the elastic member A and the elastic member B are in a contracted state, facilitating the installation of the tool handle 50 to be fixed.

[0047] When the operating member 20 moves from the release position to the locking position, the two clamping members 10 gradually move towards each other and close. When the operating member 20 is in the locking position, the stop member 61 extends under the action of the first elastic member 62 and rigidly abuts against the outer wall of the base 40 to achieve mechanical self-locking and prevent the clamping member 10 from moving in the reverse direction (opening); at the same time, the elastic member A and the elastic member B apply a continuous clamping force to the tool holder 50, and the clamping force is finely adjusted according to the size of the tool holder 50 to eliminate the gap between the clamping member 10 and the tool holder 50 caused by the difference in the tool holder 50 or component wear.

[0048] The solution of this embodiment adjusts the way of locking the tool holder 50 by the clamping member 10. Through the coordinated operation of the operating member 20 and the locking assembly 60, the clamping member 10 is closely attached to the tool holder 50 in the form of a sliding displacement. At the same time, with the dual functions of the limit of the stop member 61 and the continuous clamping of the second elastic member 63, a dual locking of rigidity and elasticity is formed. Compared with the traditional single locking mode, such as fitting and fixing, elastic clamping or mechanical limiting, the dual locking greatly improves the reliability of locking. In terms of operation, the locking device of this embodiment drives the two clamping members 10 to move synchronously through the operating member 20. Only by moving the operating member 20 once, the adjustment of the limit of the stop member 61 and the clamping of the elastic member can be completed, and then the locking or unlocking of the tool holder 50 can be realized, and the operation is simple and efficient. It should be noted that the solution of this embodiment can automatically adjust the clamping force according to the wear or installation error of the tool holder 50, so as to solve the problem that the tool holder 50 is prone to crosstalk due to the influence of gaps or impacts in the traditional tool locking seat with a static fitting method. The locking device of this application achieves a good balance in terms of operation convenience, compatibility and long-term stability.

[0049] Please refer to Figures 4 to 6 , the locking assembly 60 further includes an adjusting member 67, which is generally block-shaped and is slidably disposed on the operating member 20. The adjusting member 67 is connected to the stop member 61 through a transmission member 64. Under the action of the transmission member 64, pressing down the adjusting member 67 can drive the stop member 61 to retract into the operating member 20 to release the locking of the stop member 61 on the tool holder 50. The transmission member 64 can be realized by the following implementation methods. Please refer to Figures 5 to 6, both ends of the transmission member 64 are respectively abutted against the bottom end of the adjusting member 67 and the groove on the stopper 61. The transmission member 64 is rotatably connected to the operating member 20 through a pin shaft to achieve lever transmission, and convert the force of pressing the adjusting member 67 downward into the force of driving the stopper 61 upward. Specifically, when the operator presses the adjusting member 67 downward, the transmission member 64 rotates with the pin shaft as the fulcrum, thereby driving the stopper 61 to retract into the operating member 20 against the elastic force of the first elastic member 62. Similarly, due to the transmission and cooperation mode between the adjusting member 67 and the stopper 61, when the stopper 61 extends downward under the action of the first elastic member 62, the adjusting member 67 will automatically move upward. To prevent the adjusting member 67 from jumping out accordingly, a limiting protrusion 671 for limiting is provided on the side wall of the adjusting member 67, and the limiting protrusion 671 cooperates with the cavity of the operating member 20 for accommodating the adjusting member 67 for limiting. In addition, in this embodiment, both ends of the transmission member 64 are connected with runners 641 through pin shafts, and the adjusting member 67 and the stopper 61 are both abutted against the runners 641 to switch the sliding friction between the transmission member 64 and the operating member 20 and the stopper 61 into rolling friction, so that the operation is more smooth during the process of pressing the adjusting member 67 to drive the stopper 61 to move. It should be noted that those skilled in the art to which the present invention pertains can also adopt other transmission structures that can realize the conversion of the movement of the adjusting member 67 into the reverse movement of the stopper 61 to replace the transmission member 64. For example, in some embodiments of the present application, the transmission member 64 can also adopt a gear-rack transmission structure, with a rack provided on the adjusting member 67 and a gear meshing therewith provided on the stopper 61. When the adjusting member 67 moves up and down, the stopper 61 is driven to move in the reverse direction through the meshing of the gear and the rack, or adopt a worm and worm gear transmission structure to convert the linear movement of the adjusting member 67 into the rotation of the worm and worm gear to drive the stopper 61 to expand and contract.

[0050] Please refer to Figure 7 and Figure 8 , at the openings of the first chute 41 and the second chute 42, two oppositely arranged inwardly turned limiting portions 413 are formed. A limiting step 414 cooperating with the limiting portion 413 is formed on the clamping member 10. The limiting step 414 includes a vertical step part 4141 and a horizontally arranged step part 4142. The side wall of the limiting portion 413 is slidably matched with the step part 4141, and the bottom surface of the limiting portion 413 is slidably matched with the step part 4142. On the one hand, both the operating member 20 and the clamping member 10 are slidably arranged in the chute. The limiting portion 413 can limit the clamping member 10 and the operating member 20 in the vertical direction, play a guiding role, and assist in completing the clamping operation. On the other hand, by providing the limiting portion 413 and the step part 4142, in cooperation with the sliding clamping mode of the clamping member 10, the vertically downward limiting of the locked tool handle 50 is further carried out to prevent the tool handle 50 from jumping out due to external force during assembly and avoid damage to the tool handle 50 body or the tool thereon.

[0051] Please refer to Figure 7 in (a) and (b) of Figure 7 . In this embodiment, including the limiting portion 413 and the limiting step 414, chamfers or rounded corners are provided at the edges where the operating member 20, the clamping member 10 and the corresponding sliding grooves are in edge contact with each other, so as to switch the edge contact to a smoother surface or line contact, thereby reducing interference and enabling the clamping member 10 and the operating member 20 to slide more smoothly in the sliding groove and reducing the jamming phenomenon. At the same time, the chamfered portion of the clamping member 10 near the bottom of the sliding groove matches the inner rounded corner radian of the key groove 51 of the tool holder 50, which is used to ensure the fitting when the clamping member 10 contacts the tool holder 50 and improve the clamping stability of the clamping member 10 on the tool holder 50; if the portion where the clamping member 10 contacts the tool holder 50 cannot be well matched with the key groove 51 of the tool holder 50, the clamping stability of the clamping member 10 on the tool holder 50 is poor.

[0052] Please refer to Figure 8 , in the longitudinal direction of the clamping member 10, the clamping member 10 is configured to include a guiding portion 11 away from the tool holder 50 and a positioning portion 12 that cooperates with the key groove 51 on the tool holder 50. The side wall of the guiding portion 11 is in sliding contact with the side wall of the first sliding groove 41, and the side wall of the positioning portion 12 has a clearance fit with the side wall of the first sliding groove 41. Since the clamping member 10 is slidably arranged in the first sliding groove 41, in order to ensure the guiding effect and the anti-torsion performance, the shape of the clamping member 10 is forcibly limited by the inner wall of the sliding groove and cannot be well matched with the shape of the key groove 51 of the tool holder 50, which affects the clamping and locking stability. The clamping member 10 is divided into a guiding portion 11 and a positioning portion 12, and the side wall of the positioning portion 12 has a clearance fit with the side wall of the first sliding groove 41, so that the positioning portion 12 that cooperates with the key groove 51 of the tool holder 50 is disengaged from the sliding groove constraint to ensure its precise fit with the key groove 51; the guiding portion 11 is in close sliding contact with the side wall of the sliding groove, undertakes the guiding function of the clamping member 10, ensures the linearity of the moving path, and provides anti-torsion stiffness to resist the circumferential force of the tool holder 50 (such as the tool rotation torque) and prevent the clamping member 10 from deflecting. In addition, since there is no contact between the positioning portion 12 and the side wall of the first sliding groove 41, during the operation of the clamping member 10, the wear generated between the clamping member 10 and the sliding groove is only concentrated on the guiding portion 11, realizing the decoupling of the positioning function and the guiding / wear area (the portion in contact with the first sliding groove 41), reducing the wear of the positioning portion 12 caused by the cooperation with the sliding groove, and ensuring the cooperation accuracy between the clamping member 10 and the tool holder 50 during long-term use.

[0053] Embodiment 2, please refer to Figure 10 and Figure 11, except for the setting method of the second elastic member 63, other structures are basically the same as those in Embodiment 1. In this embodiment, the locking assembly 60 further includes a rod 65 and an L-shaped member 66 located at the end of the stopper 61. The L-shaped member 66 includes a vertical arm 661 and a horizontal arm 662. The rod 65 passes through the vertical arm 661 and is connected to the stopper 61. The L-shaped member 66 is slidably fitted on the rod 65. The second elastic member 63 is sleeved on the rod 65 and abuts between the end of the rod 65 and the vertical arm 661 of the L-shaped member 66.

[0054] Please refer to Figure 10 , when the operating member 20 is in the release position, the bottom end of the horizontal arm 662 is in sliding abutment with the second chute 42, and the end of the horizontal arm 662 abuts against the wall of the cavity of the operating member 20 that houses the stopper 61. Please refer to Figure 11 , when the operating member 20 slides to the locking position, it extends under the action of the first elastic member 62. The end of the horizontal arm 662 abuts against the outer wall of the base 40, preventing the clamping member 10 from moving in the reverse direction (opening). At the same time, the second elastic member 63 continuously applies a rightward force to the L-shaped member 66. Under the action of the second elastic member 63, the L-shaped member 66 automatically adapts to the gap between the L-shaped member 66 and the outer wall of the base 40, maintaining a state of fitting with the outer wall of the base 40, and eliminating the gap between the clamping member 10 and the tool holder 50 caused by assembly differences or wear of the tool holder 50. When there is a gap when one end of the clamping member 10 is in contact with the tool holder 50, in order to make the clamping member 10 fit with the tool holder 50 to play its locking role, the operating member 20, compared with the normal assembly state, please refer to Figure 9 , the sliding distance in the second chute 42 increases (in the illustrated relationship, the sliding direction is to the left), resulting in a gap D between the outer wall of the base 40 and the stopper 61 after the stopper 61 extends. If there is this gap D, a non-contact area will be formed between the stopper 61 and the L-shaped member 66 and the outer wall of the base 40, and the stopper 61 cannot provide a good locking state for the tool holder 50. In the solution of Embodiment 1 of the present application, there is a solution for setting the second elastic member 63, which directly applies a continuous clamping force to the clamping member 10 by cooperating with the fixed block 70. Although this method can eliminate the gap between the clamping member 10 and the tool holder 50 and play the elastic locking function, the gap D between the stopper 61 and the outer wall of the base 40 still exists, and it is difficult to play the rigid limiting effect of the stopper 61. In this embodiment, through the setting of the L-shaped member 66 and the rod 65, the L-shaped member 66 can automatically compensate for the gap D through the elastic deformation of the second elastic member 63, and for the case where there is a gap D, the double locking effect can still be exerted.

[0055] To prevent the L-shaped member 66 from rotating around the rod 65 during locking, a keyway structure (not shown in the figure) is provided between the vertical arm 661 of the L-shaped member 66 and the rod 65. A groove is machined axially on the surface of the rod 65. The groove is arranged axially along the rod 65 and has a certain length. At the same time, a corresponding key is provided at the inner hole of the vertical arm 661 of the L-shaped member 66 that mates with the rod 65. When the L-shaped member 66 is installed on the rod 65, the key is inserted into the groove. Through the cooperation of the key and the groove, the rotation of the L-shaped member 66 around the rod 65 is restricted, and it does not affect the axial sliding of the L-shaped member, ensuring that the L-shaped member 66 can function stably during the locking process.

[0056] Please refer to Figure 10 and Figure 11 , the rod 65 is fixed to the stop member 61 by means of a threaded connection. The end of the rod 65 is fitted with a nut 68 in a threaded connection. The second elastic member 63 abuts between the nut 68 and the L-shaped member 66. By turning the nut 68, the nut 68 moves towards the end close to the L-shaped member 66. Since the L-shaped member 66 always abuts against the cavity wall of the operating member 20 that houses the stop member 61 in the release position and always abuts against the outer wall of the base 40 in the locked position, the pre-compression amount of the second elastic member 63 can be adjusted by turning the nut 68, and the pre-tightening force on the L-shaped member 66 can be adjusted. In this way, by controlling the pre-compression amount of the second elastic member 63, the abutting force between the L-shaped member 66 and the outer wall of the base 40 and the clamping force of the clamping member 10 on the tool holder 50 can be controlled in the locked position. On the other hand, for the second elastic member 63 whose elasticity decreases or partially fails due to long-term use, the operator can restore the pre-tightening force of the second elastic member 63 on the L-shaped member 66 by adjusting the pre-compression amount of the second elastic member 63. In addition, in some embodiments of the present application, the rod 65 can also be designed to have a bolt head. The rod 65 is threadedly connected to the stop member 61. A limiting hole that mates with the end of the rod 65 is provided in the stop member 61. The second elastic member 63 abuts between the bolt head and the L-shaped member 66. By turning the bolt head, the bolt head and the rod 65 are displaced axially as a whole to adjust the pre-tightening force of the second elastic member 63.

[0057] Example 3, please refer to Figure 3, this embodiment also provides a knife locking seat, which includes the locking device described in the above embodiment. A hole 80 for installing the knife handle is formed on the base of the knife locking seat, and the first chute and the second chute are arranged around the hole 80. Exemplarily, taking the hole 80 for limiting the HSK knife handle as an example, the hole 80 is a stepped hole structure that cooperates with the end of the knife handle. This stepped design can be adapted to the end of the HSK knife handle. In other embodiments of the present application, the hole 80 can also be designed according to the specifications and characteristics of different types of knife handles. For example, for some knife handles with special interfaces, the hole 80 can be designed into a special-shaped structure that matches it to meet diverse usage requirements. The specific structure of the locking device refers to the above embodiments. Since the knife locking seat in this embodiment adopts all the technical solutions of the above embodiments 1 and 2, the knife locking seat in this embodiment has all the technical effects brought by the technical solutions of the above embodiments. Therefore, the beneficial effects of the knife locking seat in this embodiment will not be elaborated again.

[0058] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A locking device, comprising a base and a slide groove arranged on the base, characterized in that: The slide groove includes a first slide groove and a second slide groove, and the locking device includes: Two clamping members are slidably arranged in the first slide groove; an operating member is slidably arranged in the second slide groove and is hinged to each clamping member through a connecting rod; The locking assembly comprises a stopper and a first elastic member, wherein the stopper is attached to the operating member, and the first elastic member abuts between the stopper and the operating member; The locking assembly also includes a rod, an L-piece and a second elastic piece. The L-piece includes a vertical arm and a horizontal arm. The rod passes through the vertical arm and is connected to the stopper. The L-piece is slidably fitted on the rod. The second elastic piece is sleeved on the rod and abuts between the end of the rod and the L-piece. The operating member can move between a locking position and a releasing position. When the operating member is in the releasing position, the bottom end of the horizontal arm abuts against or slides with the second sliding groove, and the end of the horizontal arm abuts against the cavity wall of the operating member accommodating the stopper. When the operating member is in the locking position, the two clamping members clamp the member to be fixed, the horizontal arm extends under the action of the first elastic member, the end of the horizontal arm abuts against the outer wall of the base, and under the action of the second elastic member, it automatically adapts to the gap between the L member and the outer wall of the base to prevent the clamping member from opening in the reverse direction; The clamping part is divided into a guiding part and a positioning part in the length direction; the guiding part is away from the part to be fixed, and the side wall is in sliding contact with the first slide groove, which is used to guide and limit lateral deviation; the side wall of the positioning part is in clearance fit with the first slide groove, and the cross-sectional shape of the positioning part in the length direction is in fit with the keyway on the part to be fixed.

2. The locking device according to claim 1, characterized in that: The locking assembly also includes an adjusting member, which is attached to the operating member. The adjusting member is connected to the stop member through a transmission member. The adjusting member drives the stop member to move through the transmission member to release the lock on the fixed member.

3. The locking device according to claim 1, characterized in that: Two inwardly turned limiting parts are formed at the opening of the first slide groove and / or the second slide groove, and a limiting step cooperating with the limiting parts is formed on the clamping member to limit and fix the fixed member in the vertical direction.

4. The locking device according to claim 1, characterized in that: A threaded section is provided on the rod, a nut is threadedly connected to the end of the rod, a second elastic member is sleeved on the rod and abuts between the nut and the vertical arm, and the preload force of the second elastic member is adjusted by the axial displacement of the nut; Alternatively, the rod has a bolt head, the rod and the stopper are connected by threads, the second elastic member abuts between the bolt head and the L member, and the preload force of the second elastic member is adjusted by the axial displacement of the bolt head.

5. A knife lock seat, characterized in that: It comprises the locking device according to any one of claims 1 to 4, a base and a hole formed on the surface of the base, wherein the hole is used to accommodate the tool handle, and the first slide groove and the second slide groove are arranged around the hole.

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