A sliding fit device and cutting equipment for machining.

Abstract

This application provides a sliding fit device and cutting equipment for machining, relating to the field of cutting equipment technology. A pre-tightening structure and a fixed movable part are arranged at intervals along a second direction, and the pre-tightening structure and a sliding movable part are arranged at intervals along a third direction. The pre-tightening structure can move relative to the sliding movable part along the second direction. During installation and debugging, when the operator drives the pre-tightening structure to move and adjust it along the second direction, it can simultaneously change the distance between the pre-tightening structure and the sliding part in the third direction, adjusting the gap in both directions simultaneously with a single adjustment action. The sliding fit device only needs one set of pre-tightening structures to complete the accuracy correction in both directions, which can prevent the cutting tool from wobbling or deviating in the non-driving direction during cutting operations, improving the stability of the feed motion.

Description

Technical Field

[0001] This application relates to the field of cutting equipment technology, and in particular to a sliding fit device and cutting equipment for cutting processing. Background Technology

[0002] A cutting device is a processing equipment that performs shaping and cutting of blanks, such as cutting blanks according to preset finished product dimensions and contour paths to manufacture finished products of corresponding dimensions and contours. A cutting device typically includes a drive mechanism and a cutting tool. The drive mechanism drives the cutting tool to move along a preset direction, thereby enabling the blank to be cut and shaped according to a predetermined contour.

[0003] However, in existing cutting devices, the cutting tool is prone to wobbling in the non-driving direction during the cutting process, resulting in poor cutting accuracy. Summary of the Invention

[0004] The purpose of this application is to provide a sliding fit device and cutting equipment for cutting processes, thereby solving the aforementioned technical problems existing in the prior art.

[0005] In a first aspect, embodiments of this application provide a sliding fit device for cutting processing, used in a cutting device. The sliding fit device is used to connect a sliding part of the cutting device and is movable relative to the sliding part along a first direction. The sliding fit device includes a base frame, a fixed movable part, a sliding movable part, and a pre-tightening structure. The pre-tightening structure, the fixed movable part, and the sliding movable part are connected to the base frame. The fixed movable part and the sliding movable part are spaced apart along a second direction to form an installation space for installing the sliding part. The pre-tightening structure is used to elastically abut against the sliding part along the second direction or a third direction. The pre-tightening structure and the sliding movable part are spaced apart along a third direction. The installation space is formed between the pre-tightening structure and the sliding movable part. The pre-tightening structure is used to adjust the distance between the pre-tightening structure and the sliding part in the third direction while moving along the second direction. The first direction, the second direction, and the third direction intersect each other.

[0006] Secondly, embodiments of this application provide a cutting device, which includes the aforementioned sliding engagement device and a sliding part, wherein the sliding engagement device and the sliding part are connected.

[0007] The technical solution adopted in this application can achieve the following beneficial effects: the sliding fit device can be slidably installed on the sliding part and slidably disposed relative to the sliding part along a first direction. The sliding fit device is connected to the cutting tool to drive the cutting tool to slide along the first direction, so that the cutting tool can perform cutting work along a specified path.

[0008] Compared to existing technologies, in this embodiment, the pre-tightening structure and the fixed movable part are arranged at intervals along the second direction, and the pre-tightening structure and the sliding movable part are arranged at intervals along the third direction. The pre-tightening structure can move relative to the sliding movable part along the second direction. During installation and debugging, when the operator drives the pre-tightening structure to move and adjust it along the second direction, it can simultaneously change the distance between the pre-tightening structure and the sliding part in the third direction, and adjust the gap in both directions simultaneously with a single adjustment action. The sliding fit device only needs to set one set of pre-tightening structures to complete the accuracy correction in both directions, which can avoid the cutting tool from shaking or deviating in the non-driving direction during cutting operations and improve the stability of the feed motion.

[0009] Compared to traditional rigid clamping structures, this embodiment employs an elastic abutment mechanism to achieve a tight fit between the pre-tightening structure and the sliding part. In cutting equipment, gaps of varying sizes may form between the pre-tightening structure and the sliding part in the second and third directions. The elastic abutment mechanism can adaptively adjust the pushing stroke based on the actual gaps in both directions. If the gap in the second direction is larger than the gap in the third direction, excessive pre-tightening force may occur in the third direction when the operator drives the pre-tightening structure to move along the second direction to achieve fit. The elastic abutment mechanism can buffer the compressive stress between the two, preventing stress concentration, and avoiding the problem of excessive pre-tightening force on one side and insufficient pre-tightening force on the other side in traditional rigid adjustment. This structure ensures that the pre-tightening structure remains tightly fitted to the sliding part in both the second and third directions, eliminating motion coupling deviations caused by uneven pre-tightening forces in both directions. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the structure of a cutting device shown in an exemplary embodiment of this application; Figure 2 This is a schematic diagram of the sliding fit device and sliding part shown in an exemplary embodiment of this application; Figure 3 This is a schematic diagram illustrating the structure of the sliding part, the driving structure, and the sliding movable part in an exemplary embodiment of this application; Figure 4 This is a schematic diagram of the sliding part, driving structure, and sliding movable part from another perspective, illustrating an exemplary embodiment of this application; Figure 5This is an exploded view of the sliding movable part and the pre-tightening structure shown in an exemplary embodiment of this application; Figure 6 This is an exploded view of a pre-tightening structure shown in an exemplary embodiment of this application; Figure 7 This is a schematic diagram of the sliding fit device and sliding part from another perspective, illustrating an exemplary embodiment of this application; Figure 8 yes Figure 7 Enlarged view of point a.

[0012] In the diagram: 1. Cutting equipment; 100. Sliding fitting device; 110. Base frame; 120. Fixed movable part; 121. First bearing part; 130. Sliding movable part; 131. Body; 132. Baffle; 133. Waist-shaped hole; 134. Receiving cavity; 1341. Protrusion; 1342. Opening; 135. Second bearing part; 140. Pre-tightening structure; 141. First surface; 143. Abutting part; 1431. Screw; 1432. Nut ; 144, Mounting component; 1441, Guide section; 1442, Groove; 145, Threaded component; 146, Elastic component; 150, Drive structure; 151, Drive gear; 160, Guide post; 161, Third surface; 170, Mounting space; 200, Sliding part; 200a, First guide rail; 200b, Second guide rail; 210, Sliding groove; 220, Second surface; 230, Fourth surface; 240, Rack; 300, Cutting tool. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0014] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0015] This application provides a sliding fit device 100 for cutting processes. Please refer to [link to relevant documentation]. Figure 1 For ease of description, the following content will be referred to as sliding fit device 100.

[0016] A sliding engagement device 100 is used in the cutting device 1. The sliding engagement device 100 connects to the sliding portion 200 of the cutting device 1 and is movable relative to the sliding portion 200 along a first direction. For example, the sliding portion 200 can be a guide rail structure that extends along the first direction. The sliding engagement device 100 is slidably connected to the sliding portion 200 and is slidably disposed relative to the sliding portion 200 along the first direction. The sliding engagement device 100 is drive-connected to the cutting tool 300, thereby driving the cutting tool 300 to slide along the first direction.

[0017] Please see Figure 2 The sliding engagement device 100 may include a base frame 110, a fixed movable part 120, a sliding movable part 130, and a pre-tightening structure 140. The base frame 110 may be a sheet-like structure or a column-like structure, etc., without limitation. The pre-tightening structure 140 connects to the sliding movable part 130. Both the fixed movable part 120 and the sliding movable part 130 are connected to the base frame 110. The connection method may be fastener connection, snap-fit ​​connection, or welding, etc., without limitation. For example, the base frame 110 may be a plate-like structure. The fixed movable part 120 and the sliding movable part 130 are arranged sequentially along the extension direction of the base frame 110 and fixed to the base frame 110 by threaded connection. The pre-tightening structure 140 is threadedly connected to the sliding movable part 130.

[0018] Please see Figure 2 and Figure 3 The fixed movable part 120 and the sliding movable part 130 are spaced apart along the second direction to form an installation space 170 for mounting the sliding part 200. The installation space 170 is formed between the pre-tightening structure 140 and the sliding movable part 130, and the pre-tightening structure 140 may be disposed on the sliding movable part 130. For example, the two side boundaries of the installation space 170 in the second direction can be the fixed movable part 120 and the sliding movable part 130; the installation space 170 occupies a portion of space in the third direction, and the two side boundaries of this portion of space are the pre-tightening structure 140 and the sliding movable part 130, respectively.

[0019] The pre-tightening structure 140 is used to elastically abut against the sliding part 200 in a second direction or a third direction. The pre-tightening structure 140 and the sliding movable part 130 are spaced apart in a third direction. The pre-tightening structure 140 is used to adjust the distance between the pre-tightening structure 140 and the sliding part 200 in a third direction while moving in the second direction. In other words, the pre-tightening structure 140 and the fixed movable part 120 are arranged spaced apart in the second direction, and the pre-tightening structure 140 and the sliding movable part 130 are arranged spaced apart in a third direction. The pre-tightening structure 140 can move relative to the sliding movable part 130 in the second direction. For example, the pre-tightening structure 140 is provided with an inclined abutting surface, which can elastically abut against the abutting surface of the sliding part 200 in the second direction or a third direction. The pre-tightening structure 140 and the sliding movable part 130 are arranged spaced apart in a third direction. When the pre-tightening structure 140 translates in the second direction, it synchronously changes its distance from the sliding part 200 in a third direction by relying on the inclined wedge action. Only a single adjustment in the second direction is needed to simultaneously correct the assembly gap in both directions.

[0020] During installation and commissioning, when the operator drives the pre-tightening structure 140 to move and adjust along the second direction, it can simultaneously change the distance between the pre-tightening structure 140 and the sliding part 200 in the third direction, adjusting the gap in both directions simultaneously with a single adjustment action. The sliding fit device 100 only needs one set of pre-tightening structures 140 to complete the accuracy correction in both directions, which can prevent the cutting tool 300 from shaking or deviating in the non-driving direction during cutting operations and improve the stability of the feed motion.

[0021] Please see Figure 3 and Figure 4 Compared to traditional rigid clamping structures, this embodiment employs an elastic abutment mechanism to achieve contact between the pre-tightening structure 140 and the sliding part 200. In the cutting device 1, gaps of unequal size may form between the pre-tightening structure 140 and the sliding part 200 in the second and third directions. The elastic abutment mechanism can adaptively change the pushing stroke according to the actual gaps in both directions. If the gap in the second direction is larger than the gap in the third direction, when the operator drives the pre-tightening structure 140 to move along the second direction to achieve contact, excessive pre-tightening force may occur in the third direction. The elastic abutment mechanism can buffer the compressive stress between the two, prevent stress concentration, and avoid the problem of excessive pre-tightening force on one side and insufficient pre-tightening force on the other side in traditional rigid adjustment. This structure ensures that the pre-tightening structure 140 is always tightly fitted to the sliding part 200 in both the second and third directions, eliminating movement jamming or deviation caused by uneven pre-tightening force in both directions.

[0022] Understandably, the first direction, the second direction, and the third direction intersect each other, and further, any two of the first direction, the second direction, and the third direction are perpendicular to each other. A Cartesian coordinate system is established in the cutting device 1; for example, the first direction can be the x-axis direction in the Cartesian coordinate system, the second direction can be the y-axis direction in the Cartesian coordinate system, and the third direction can be the z-axis direction in the Cartesian coordinate system.

[0023] In the embodiments of this application, please refer to Figure 5 and Figure 6 The pre-tightening structure 140 may include an abutment 143 and a mounting member 144, with the abutment 143 movably mounted to the mounting member 144 along a second or third direction. For example, the mounting member 144 may have an opening at its end, into which the abutment 143 is inserted. A screw 1431 is inserted into the abutment 143, and a nut 1432 is threadedly connected to the screw 1431 to lock the abutment 143 onto the mounting member 144. Alternatively, in other cases, the mounting member 144 may have a sliding post at its end, extending along a second or third direction, with the abutment 143 mounted on the sliding post. This arrangement allows the mounting member 144 to be movably mounted to the sliding movable part 130 along the second direction, and the mounting member 144 can drive the abutment 143 to move along the second direction as well.

[0024] Please see Figure 6 An elastic element 146 is provided between the abutment member 143 and the mounting member 144. The elastic element 146 can be a spring or a sheet spring, etc., and is not limited thereto. For example, the elastic element 146 can be a spring, which is sleeved on the screw 1431. The elastic element 146 elastically abuts against the abutment member 143, and the abutment member 143 is used to abut against the sliding part 200. This arrangement relies on the elastic deformation characteristics of the elastic element 146 to achieve flexible buffering during the operation of the device, absorb the impact load during operation, and at the same time utilize the adaptive deformation capability of the elastic element 146 to compensate for the assembly stress in the second and third directions, avoid stress concentration in a single direction and plastic deformation of the component, and improve the safety of the sliding fit device 100 in precision calibration.

[0025] Preferably, the abutment 143 is in a rolling fit with the mounting member 144. For example, the end of the mounting member 144 is provided with a sliding post, and the abutment 143 is slidably mounted on the sliding post while being rotatable around the sliding post. Compared with a sliding contact fit, this reduces the frictional resistance when the abutment 143 is adjusted relative to the mounting member 144, eliminating the problems of jamming and adjustment delay caused by sliding friction.

[0026] In the embodiments of this application, please refer to Figure 4The abutment member 143 has a first surface 141, and the sliding part 200 has a corresponding second surface 220. The first surface 141 is configured to correspond with the second surface 220 of the sliding part 200. Both the first surface 141 and the second surface 220 can be inclined surfaces. In the second direction, the first surface 141 is inclined towards the direction closer to the third direction. When the first surface 141 abuts against the second surface 220 of the sliding part 200, the inclined contact can simultaneously form bidirectional force constraint and positional fit in both the second and third directions. When precision calibration is required, the technician can drive the abutment member 143 to move along the second direction, and its force can be decomposed into components in both the second and third directions, so that the abutment member 143 and the sliding part 200 are synchronously fitted in the second and third directions, achieving a limit fit in both directions with a single-direction adjustment. This configuration simplifies the adjustment process and ensures the synchronicity and consistency of the bidirectional pre-tightening fit.

[0027] In the embodiments of this application, please refer to Figure 5 The sliding movable part 130 may include a body 131 and a baffle 132. The body 131 has a receiving cavity 134 with an opening 1342. The mounting member 144 is installed in the receiving cavity 134 through the opening 1342. A portion of the mounting member 144 extends outside the receiving cavity 134 and connects to an abutment member 143. The mounting member 144 is constrained by the body 131 to slide relative to the sliding movable part 130 in a second direction. The baffle 132 is detachably connected to the body 131 and closes the opening 1342. For example, an installer can install the mounting member 144 into the receiving cavity 134 through the opening 1342 to complete pre-assembly. After assembly, the baffle 132 is fixedly connected to the outside of the body 131 and the opening 1342 is closed. The closed baffle 132 prevents the mounting part 144 from detaching from the groove 1442 along the second direction, constraining the mounting part 144 within the space enclosed by the body 131 and the baffle 132. This restricts the mounting part 144 from detaching without disassembling the baffle 132, while ensuring assembly stability during the reciprocating movement of the mounting part 144 along the second direction, preventing the mounting part 144 from loosening and affecting the pre-tightening accuracy. The inner side of the baffle 132 can abut against the mounting part 144 to form a stroke limit, restricting the maximum adjustment stroke of the mounting part 144 in the second direction and preventing excessive pre-tightening that could deform the guide rail.

[0028] In one implementation, please refer to Figure 5One of the body 131 and the mounting component 144 has an oblong hole 133, and the other has a guide portion 1441. The oblong hole 133 extends along a second direction, and the guide portion 1441 is embedded within the oblong hole 133. For example, the body 131 has an oblong hole 133, and the mounting component 144 has a guide portion 1441. The guide portion 1441 can be a screw, stud, etc. After the body 131 and the mounting component 144 are assembled, the guide portion 1441 can be inserted into the oblong hole 133 and is detachably connected to the mounting component 144. The wall of the oblong hole 133 has a restraining effect to constrain the guide portion 1441 from sliding relative to it along the second direction, thereby improving sliding stability. Furthermore, the length range of the waist-shaped hole 133 limits the effective sliding stroke of the guide part 1441, thereby constraining the maximum range of motion of the mounting part 144 in the second direction. This can prevent the mounting part 144 from being overloaded due to excessive adjustment stroke, and the sliding part 200 from being squeezed and deformed. It can also prevent the problem of insufficient preload and residual play due to insufficient adjustment stroke. The adjustment range in the second direction is limited to a reasonable working condition range, so as to achieve controllable setting of preload force and adjustment stroke.

[0029] In another implementation, please refer to Figure 5 The cavity wall of the receiving cavity 134 and the mounting member 144 are each provided with a groove 1442 and a corresponding protrusion 1341. The protrusion 1341 extends along a second direction and is movably embedded in the groove 1442 to constrain the mounting member 144 to slide relative to the sliding part 130 in the second direction. For example, the cavity wall of the receiving cavity 134 may have a protruding protrusion 1341, and the surface of the mounting member 144 may have a groove 1442. The protrusion 1341 and the groove 1442 cooperate with each other to constrain the mounting member 144 to slide relative to the sliding part 130 in the second direction.

[0030] Preferably, please refer to Figure 3 and Figure 5The sliding movable part 130 may further include a threaded member 145, which is rotatably mounted on the body 131 or the baffle 132 and is connected to the mounting member 144 in a driving manner. The threaded member 145 is used to drive the mounting member 144 to slide in a second direction. For example, the threaded member 145 is rotatably mounted on the baffle 132, and the threaded member 145 and the baffle 132 are threadedly engaged. By driving the threaded member 145 to rotate, the threaded member 145 gradually extends into or out of the receiving cavity 134, and the mounting member 144, which is connected to it in a driving manner, will move under the drive of the threaded member 145 in the second direction. The threaded member 145 may be a bolt, stud, etc. The sliding movable part 130 has a through hole, and the threaded member 145 is rotatably mounted in the through hole. The axial direction of the through hole is parallel or collinear with the second direction, and the threaded member 145 extends along the second direction. The threaded component 145 and the mounting component 144 are threadedly engaged. By rotating the threaded component 145, the threaded component 145 drives the mounting component 144 to move through its own threads, so that the mounting component 144 can move to a preset position. In addition, the threaded engagement has a self-locking capability. When the threaded component 145 is not rotated directly without external force, the mounting component 144 will not rotate due to its own weight or vibration, so that it can constrain the movement of the mounting component 144 along its own axis and ensure that it is relatively fixed in the preset position.

[0031] Please see Figure 7 A first support portion 121 protrudes from the side of the fixed movable portion 120 along the direction close to the sliding movable portion 130. The first support portion 121 is spaced apart from the base frame 110 to form a first mounting space for accommodating the first guide rail 200a. In the third direction, the distance between the fixed movable portion 120 and the base frame 110 is greater than the thickness of the first guide rail 200a. During the installation of the first guide rail 200a in the first mounting space, the first mounting space provides assembly clearance for the first guide rail 200a, reducing assembly interference between the first guide rail 200a and the base frame 110, and facilitating the installation of the first guide rail 200a. Preferably, the first support portion 121 can form a lateral abutment with the first guide rail 200a, so that the base frame 110 is stably suspended from the sliding portion 200, offsetting the lateral cutting force and preventing the entire device from shifting.

[0032] The sliding movable part 130 protrudes from its side along the direction close to the fixed movable part 120 to form a second support part 135. The second support part 135 is spaced apart from the base frame 110 to form a second mounting space for accommodating the second guide rail 200b. In the third direction, the distance between the sliding movable part 130 and the base frame 110 is greater than the thickness of the second guide rail 200b. During the installation of the second guide rail 200b in the second mounting space, the second mounting space provides clearance for the installation and removal of the second guide rail 200b, facilitating its installation. It should be noted that both the first and second mounting spaces are portions of the mounting space 170.

[0033] The first bearing portion 121 abuts against the top surface of the first guide rail 200a of the sliding portion 200, and the second bearing portion 135 abuts against the top surface of the second guide rail 200b of the sliding portion 200, so that the base frame 110 is suspended from the sliding portion 200. The first bearing portion 121 presses downward against the top surface of the first guide rail 200a of the sliding portion 200 to form two abutting surfaces, and the second bearing portion 135 presses downward against the top surface of the second guide rail 200b of the sliding portion 200 to form three abutting surfaces. Relying on the self-weight of the base frame 110 and the components mounted on it, the two bearing portions and the corresponding guide rails always remain in a close and abutting state, so that the base frame 110 is suspended and mounted on the sliding portion 200.

[0034] When precision calibration and adjustment are required, the operator drives the pre-tensioning structure 140 to move and adjust it along the second direction, changing the distance between the pre-tensioning structure 140 and the sliding part 200 in the third direction. The third direction is vertical. The pre-tensioning structure 140 can abut against the second guide rail 200b in the vertically upward direction to adjust the clearance in the third direction, preventing the cutting tool 300 from shaking or deviating in the non-driving direction during cutting operations and improving the stability of the feed motion. However, relying on the self-weight of the base frame 110 and the components mounted on it, the two bearing parts and the corresponding guide rails always remain in a close and abutting state. The pre-tensioning structure 140 only maintains a pressing and limiting function and does not bear the additional weight of the base frame 110, thus extending its service life.

[0035] Understandably, in the second direction, the side of the fixed movable part 120 abuts against the first guide rail 200a along the direction close to the sliding movable part 130, and the side of the sliding movable part 130 abuts against the second guide rail 200b along the direction close to the fixed movable part 120. By relying on multi-point abutment constraints to limit the vertical movement of the suspension structure, and in conjunction with the single-sided pre-tightening structure 140, stable locking can be achieved, ensuring the accuracy of sliding operation and long-term load-bearing reliability.

[0036] In the embodiments of this application, please refer to Figure 7The sliding part 200 includes a first guide rail 200a and a second guide rail 200b. A fixed movable part 120 is movably connected to the first guide rail 200a of the sliding part 200, and a sliding movable part 130 is movably connected to the second guide rail 200b of the sliding part 200. For example, the extending directions of the first guide rail 200a and the second guide rail 200b are both in a first direction. The dual guide rail configuration can form a dual limiting guide constraint, effectively suppressing the offset and shaking of the sliding mating device 100 during the sliding process, and greatly improving the overall sliding motion accuracy.

[0037] Please see Figure 7 The sliding engagement device 100 may further include a drive structure 150, which is mounted on the base frame 110 and located between the fixed movable part 120 and the sliding movable part 130. In other words, the drive structure 150 is positioned between the first guide rail 200a and the second guide rail 200b. The drive structure 150 is used for transmission connection with the first guide rail 200a. The drive structure 150 is integrated into the space between the two guide rails, eliminating the need for additional external space expansion, reducing the overall size of the device, and making the structure more compact. Simultaneously, the drive structure 150 is positioned adjacent to either the first guide rail 200a or the second guide rail 200b, facilitating transmission connection between the drive structure 150 and the first guide rail 200a or the second guide rail 200b, ensuring direct and stable force transmission, and further guaranteeing smooth drive operation.

[0038] In one implementation, please refer to Figure 7 The drive structure 150 has a drive shaft, which can be a drive motor, fixedly mounted on the base frame 110. The drive shaft is used for transmission connection with the transmission structure of the sliding part 200. More specifically, a drive gear 151 is provided on the drive shaft, and the sliding part 200 has a rack 240 extending along a first direction. The drive gear 151 is used to mesh with the rack 240. Through the transmission meshing between the drive gear 151 and the rack 240, the rotational motion of the drive shaft is converted into linear motion of the sliding part 200 along the first direction. The cooperative arrangement of the drive gear 151 and the rack 240 can achieve long-distance precise transmission, ensuring the positioning accuracy and motion smoothness of the sliding part 200 moving along the first direction. In addition, by adjusting the relative position of the sliding part 200 with respect to the drive structure 150 through the pre-tightening structure, the distance between the pre-tightening structure 140 and the sliding part 200 in the second direction can be adjusted. This arrangement can reduce or eliminate the gap between the drive gear 151 and the rack 240, ensuring the cutting feed positioning accuracy.

[0039] Please see Figure 7 and Figure 8The sliding mating device 100 also includes a guide post 160, which is disposed on the drive structure 150, the fixed movable part 120, or the sliding movable part 130. The guide post 160 is used to be embedded in the sliding groove 210 of the sliding part 200. For example, the guide post 160 is movably mounted on the drive structure 150 along a third direction. The end of the guide post 160 is provided with a third surface 161. In the third direction, the third surface 161 is inclined along the second direction and can abut against the fourth surface 230 on the groove wall of the sliding groove 210. By forming an inclined contact between the third surface 161 and the fourth surface 230 on the groove wall of the sliding groove 210, the sliding part 200 can be laterally limited and guided simultaneously in the second direction and the third direction through the interaction of the two sets of mating surfaces, achieving multi-directional spatial constraint, further eliminating the lateral play of the sliding part 200, and improving the constraint effect.

[0040] This application also provides a cutting device 1, please refer to... Figure 1 The cutting device 1 includes the sliding engagement device 100 as described above, and also includes a sliding part 200. The sliding engagement device 100 and the sliding part 200 are connected. In this way, the cutting device 1 has the beneficial effects of any of the aforementioned solutions, which will not be elaborated further here.

[0041] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0042] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0043] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A sliding fit device for cutting operations, used in cutting equipment, characterized in that, The sliding fit device is used to connect the sliding part (200) of the cutting equipment and can move relative to the sliding part (200) in a first direction; The sliding engagement device includes a base frame (110), a fixed movable part (120), a sliding movable part (130), and a pre-tightening structure (140). The pre-tightening structure (140) is connected to the sliding movable part (130). Both the fixed movable part (120) and the sliding movable part (130) are connected to the base frame (110). The fixed movable part (120) and the sliding movable part (130) are spaced apart along a second direction to form an installation space (170). The installation space (170) is used to install the sliding part (200). The pre-tightening structure (140) is used to elastically abut against the sliding part (200) along the second direction or the third direction. The pre-tightening structure (140) and the sliding movable part (130) are spaced apart along the third direction. The installation space (170) is formed between the pre-tightening structure (140) and the sliding movable part (130). The pre-tightening structure (140) is used to move along the second direction to adjust the distance between the pre-tightening structure (140) and the sliding part (200) in the third direction. The first direction, the second direction, and the third direction intersect each other.

2. The sliding fit device according to claim 1, characterized in that, The pre-tightening structure (140) includes an abutment (143) and a mounting member (144). The abutment (143) is movably mounted on the mounting member (144) along the second direction or the third direction. The mounting member (144) is movably mounted on the sliding part (130) along the second direction. An elastic member (146) is provided between the abutment (143) and the mounting member (144). The abutment (143) is used to abut against the sliding part (200).

3. The sliding fit device according to claim 2, characterized in that, The abutment (143) is in rolling engagement with the mounting member (144); And / or, the abutment (143) has a first surface (141) for corresponding to the second surface (220) of the sliding part (200), and in the second direction, the first surface (141) is inclined toward the direction closer to the third direction.

4. The sliding fit device according to claim 2, characterized in that, The sliding movable part (130) includes a body (131) and a baffle (132). The body (131) has a receiving cavity (134) with an opening (1342). The mounting member (144) is installed in the receiving cavity (134) through the opening (1342). The mounting member (144) is constrained by the body (131) to slide relative to the sliding movable part (130) in the second direction. A portion of the mounting member (144) extends outside the receiving cavity (134) and is connected to the abutment member (143). The baffle (132) is detachably connected to the body (131) and closes the opening (1342).

5. The sliding fit device according to claim 4, characterized in that, One of the body (131) and the mounting member (144) is provided with a waist-shaped hole (133), and the other is provided with a guide portion (1441). The waist-shaped hole (133) extends along the second direction, and the guide portion (1441) is embedded in the waist-shaped hole (133). And / or, one of the cavity wall of the receiving cavity (134) and the mounting member (144) is provided with a protrusion (1341), and the other is provided with a corresponding groove (1442). The protrusion (1341) extends along the second direction and is movably embedded in the groove (1442) to constrain the mounting member (144) to slide relative to the sliding movable part (130) along the second direction. And / or, the sliding movable part (130) further includes a threaded part (145), which is rotatably mounted on the body (131) or the baffle (132) and is connected in a transmission manner to the mounting part (144), and the threaded part (145) is used to drive the mounting part (144) to slide along the second direction.

6. The sliding fit device according to any one of claims 2-5, characterized in that, The sliding engagement device further includes a drive structure (150), which is disposed on the base frame (110) and located between the fixed movable part (120) and the sliding movable part (130). The fixed movable part (120) is movably connected to the first guide rail (200a) of the sliding part (200), and the sliding movable part (130) is movably connected to the second guide rail (200b) of the sliding part (200). The drive structure (150) is used for transmission connection with the first guide rail (200a).

7. The sliding fit device according to claim 6, characterized in that, The fixed movable part (120) has a first bearing part (121) protruding from its side along the direction close to the sliding movable part (130). The first bearing part (121) is spaced apart from the base frame (110) to form a first installation space (170). The first installation space (170) is used to accommodate the first guide rail (200a). The side of the sliding movable part (130) protrudes in a direction close to the fixed movable part (120) to form a second support part (135). The second support part (135) is spaced apart from the base frame (110) to form a second mounting space (170). The second mounting space (170) is used to accommodate the second guide rail (200b). The first bearing part (121) abuts against the top surface of the first guide rail (200a) of the sliding part (200), and the second bearing part (135) abuts against the top surface of the second guide rail (200b) of the sliding part (200), so that the base frame (110) is suspended from the sliding part (200).

8. The sliding fit device according to claim 6, characterized in that, The sliding engagement device further includes a guide post (160), which is movably mounted on the drive structure (150), the fixed movable part (120), and the sliding movable part (130) along the third direction. The guide post (160) is used to be embedded in the sliding groove (210) of the sliding part (200). The end of the guide post (160) is provided with a third surface (161). In the third direction, the third surface (161) is inclined along the second direction. The third surface (161) can abut against the fourth surface (230) on the groove wall of the sliding groove (210).

9. The sliding fit device according to claim 6, characterized in that, The drive structure (150) has a drive shaft, the drive structure (150) is mounted on the base frame (110), and a drive gear (151) is provided on the drive shaft. The drive gear (151) is used to mesh with the rack (240) of the sliding part (200) that extends along the first direction.

10. A cutting device, characterized in that, The cutting device includes the sliding fit device according to any one of claims 1-9, and the cutting device further includes a sliding part (200), the sliding fit device and the sliding part (200) are connected.

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