Clamp structure and clamp device
By employing staggered sliders and drive mechanisms in the fixture construction, the problem of insufficient opening and closing range of traditional fixtures within a limited space is solved, achieving a larger opening and closing range and higher adaptability clamping.
Patent Information
- Application Number
- CN202520347958.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Traditional clamps cannot achieve a larger opening and closing range within a limited space, making it difficult to adapt to the clamping needs of workpieces of different sizes.
Design a clamp structure in which a first slider and a second slider are located on different guide rails and are staggered from each other. A driving device, such as a ring chain or a lead screw, drives the sliders to move away from or closer to each other, thereby achieving a larger opening and closing range of the clamp.
To achieve a larger opening and closing range of the fixture within a limited space, improve clamping flexibility and adaptability, and meet the clamping needs of workpieces of different sizes.
Smart Images
Figure CN223763090U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of clamping technology, and in particular to a clamping structure and clamping device. Background Technology
[0002] In various industrial fields such as machining, assembly, performance testing, and scientific experiments, fixtures serve as indispensable process equipment, playing multiple crucial roles including workpiece fixation, support, protection, and precise positioning. With the continuous advancement of modern industrial technology, increasingly stringent requirements are placed on the performance and adaptability of fixtures. Traditional fixture designs are often limited to the basic principle of movement along a single plane or straight line, using this mechanism to achieve the opening and closing of the chuck. However, in practical applications, the working space is often very limited, requiring fixtures not only to operate flexibly within a confined space but also to have a greater opening and closing stroke to accommodate workpieces of different sizes. Therefore, how to develop new fixture solutions that can achieve a larger opening and closing range under limited space constraints has become a pressing technical challenge. Utility Model Content
[0003] The purpose of this utility model is to overcome the shortcomings of existing clamps in the limited space that cannot achieve a larger opening and closing range, and to provide a clamp structure and clamp device.
[0004] In a first aspect, the present invention provides a clamp structure, comprising:
[0005] A guide rail base has an inner cavity that is open. An opening is provided on one side of the guide rail base along the axial direction of the guide rail base, and the opening is connected to the inner cavity.
[0006] A first guide rail and a second guide rail are respectively installed on opposite sides of the inner cavity wall, and both the first guide rail and the second guide rail are arranged along the axial direction of the guide rail base.
[0007] A first slider is slidably engaged with the first guide rail. The first slider is connected to a first chuck, and the cantilever end of the first chuck extends out of the opening from the guide rail base.
[0008] The second slider is slidably engaged with the second guide rail. The second slider is connected to a second clamp, and the cantilever end of the second clamp extends out of the opening from the guide rail base.
[0009] Along the length of the first guide rail, the cantilever end of the first chuck corresponds to the cantilever end of the second chuck.
[0010] Along the radial direction of the first guide rail, the first slider and the second slider can be staggered from each other.
[0011] This utility model provides a clamp structure. The guide rail base is used to fix the first guide rail and the second guide rail. The inner cavity is used to accommodate the first guide rail and the second guide rail. The first slider and the second slider are slidably engaged with the first guide rail and the second guide rail, respectively. The first slider and the second slider are offset from each other radially along the first guide rail, meaning that the first slider and the second slider will not collide during sliding. In use, the first slider and the second slider are respectively connected to the first chuck and the second chuck, which can drive the two chucks to move away from each other or close together, thereby achieving the clamping function. Since the first slider and the second slider are located on two different guide rails and are offset from each other, the two sliders can overlap each other when the two chucks are closed. This design allows the sliders to have a larger stroke within a limited space, thus enabling the clamp to achieve a larger opening and closing range.
[0012] The radial direction of the first guide rail refers to the direction perpendicular to the axis of the first guide rail.
[0013] The first slider and the second slider can be offset in several ways: they can be offset from each other in the horizontal direction (i.e., the left-right direction); they can also be offset from each other in the vertical direction (i.e., the up-down direction); and they can even be offset from each other in both the horizontal and vertical directions at the same time.
[0014] Preferably, the guide rail base includes a top plate, a bottom plate, and a side plate, with the side plate located between the top plate and the bottom plate. The top plate has a first groove on its inner side, and the bottom plate has a second groove on its inner side. The first guide rail is installed in the first groove, and the second guide rail is installed in the second groove. During installation, the first and second grooves can quickly position the first and second guide rails respectively, thereby simplifying the installation steps and improving installation efficiency. Both the first and second guide rails can be installed using either snap-fit or bolts.
[0015] In a second aspect, the present invention provides a clamping device, including a driving device and a clamping structure, wherein a first slider and a second slider are both connected to the driving device, and under the drive of the driving device, the first slider and the second slider can move away from each other or move closer to each other.
[0016] This utility model provides a clamping device, wherein the driving device is used to drive the first slider and the second slider, so that they can move away from or towards each other, thereby driving the chuck to achieve the clamping function. Because the clamping device adopts the clamping structure, it can achieve a larger opening and closing range within a limited space.
[0017] The driving device can be a ring chain with two parallel sections, upper and lower. The ring chain is driven by a motor and can rotate in both clockwise and counterclockwise directions. Specifically, the first slider is connected to the left side of the upper parallel section of the ring chain, while the second slider is connected to the right side of the lower parallel section of the ring chain. When the ring chain rotates clockwise, it causes the first and second sliders to move closer together; conversely, when the ring chain rotates counterclockwise, the first and second sliders move away from each other. In this way, the relative distance between the first and second sliders can be effectively controlled, achieving the function of driving them to move closer or further apart.
[0018] The driving device can also be a lead screw with threads in opposite directions at both ends. The lead screw is driven by a motor. Specifically, a nut is connected to the left threaded portion of the lead screw, which is connected to the first slider; simultaneously, another nut is connected to the right threaded portion of the lead screw, which is connected to the second slider. When the lead screw rotates forward or backward under the drive of the motor, because the threads at both ends are in opposite directions, the nuts on the left and right sides will move towards or away from each other along the lead screw, thereby causing the first and second sliders to move away from or towards each other. In this way, the relative movement between the first and second sliders can be effectively controlled by the forward and reverse rotation of the lead screw.
[0019] Preferably, the driving device includes a motor, a lead screw, a first nut, and a second nut. The motor drives the lead screw to rotate. The axial direction of the lead screw is parallel to the axial direction of the guide rail base of the clamp structure. The two ends of the lead screw are respectively provided with threads in opposite directions. The first nut and the second nut are respectively installed at the two ends of the lead screw. The first nut is connected to the first slider, and the second nut is connected to the second slider. The combination of the lead screw, the first nut, and the second nut converts the rotational motion of the lead screw into linear motion. Since the first nut and the second nut are respectively connected to the threads in opposite directions at the two ends of the lead screw, when the lead screw rotates, the first nut and the second nut can move away from or towards each other. Compared with the drive scheme of a ring chain, this scheme requires less space and has a more stable and reliable operation.
[0020] The lead screw can be arranged above or below the guide rail base, or it can be arranged on the side of the guide rail base.
[0021] The motor can be arranged coaxially with the lead screw or arranged side-by-side with the lead screw. In the coaxial arrangement, the motor shaft can be directly connected to the lead screw via a coupling. In the side-by-side arrangement, the motor shaft needs to be connected to the lead screw via a gear transmission device.
[0022] The motor can be a regular DC motor, a regular AC motor, or a servo motor.
[0023] Preferably, the side plate of the guide rail base has an elongated through hole, the length of which is arranged along the axial direction of the guide rail base. The lead screw is located on the outer side of the side plate. The first slider is connected to the first nut via a first connecting arm, and the second slider is connected to the second nut via a second connecting arm. Both the first and second connecting arms pass through the through hole. This design allows the lead screw to be closer to the first and second sliders, thereby shortening the connection distance between the first slider and the first nut, and the connection distance between the second slider and the second nut, further reducing the installation space required for the lead screw, the first connecting arm, and the second connecting arm.
[0024] The first connecting arm can be connected to the top, bottom, or side of the first nut.
[0025] The second connecting arm can be connected to the top, bottom, or side of the second nut.
[0026] Preferably, the first connecting arm is bolted to the top surface of the first nut, and the second connecting arm is bolted to the bottom surface of the second nut. This design aims to optimize the connection layout of the first and second connecting arms, making their connection path simpler. This improvement not only reduces the amount of material required for the connecting arms, but also ensures that the two connecting arms will not collide with each other during operation. Therefore, this design also reduces the complexity of the connecting arm design.
[0027] Preferably, a protrusion is provided on the outer side of the side plate, and the lead screw is mounted on the protrusion via a bearing. This design integrates the lead screw into the side plate of the guide rail base, further reducing the overall size of the clamping device.
[0028] Preferably, the motor, the lead screw, and the guide rail base are arranged side by side, with the lead screw located between the motor and the guide rail base. The motor drives the lead screw to rotate via a gear set. Compared to the case where the motor and the lead screw are arranged coaxially, this side-by-side arrangement makes the overall clamping device more compact in the axial direction, thereby saving installation space in the axial direction.
[0029] Preferably, the motor and the guide rail base are connected by a housing, and the lead screw, the first nut, the second nut, and the gear set are all located inside the housing. The housing serves to connect the motor and the guide rail base, ensuring the stability of the entire structure; at the same time, it acts as a protective enclosure, protecting the lead screw, the first nut, the second nut, and the gear set from damage or interference from the external environment.
[0030] Preferably, the motor is a servo motor. Using the servo motor can improve the overall performance of the clamping device and achieve more precise control over the clamping force.
[0031] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0032] 1. This utility model provides a clamp structure in which the first slider and the second slider are respectively located on two different guide rails and staggered from each other. When the two clamps are closed, the two sliders can overlap each other, so that the sliders can have a larger stroke, thereby enabling the clamp to achieve a larger opening and closing range.
[0033] 2. This utility model provides a clamping device, which, by adopting the clamping structure, enables the clamping device to achieve a larger opening and closing range within a limited space. Attached Figure Description
[0034] Figure 1 This is a three-dimensional schematic diagram of a clamping device.
[0035] Figure 2 This is a top view of a clamping device.
[0036] Figure 3 This is a side view of a clamping device.
[0037] Figure 4 This is a top view of the lead screw and gear set.
[0038] Figure 5 This is a top view of the first guide rail and the first slider.
[0039] Figure 6 This is a three-dimensional schematic diagram of the lead screw, the first guide rail, and the first guide rail.
[0040] Figure 7 This is a top view of the first and second chucks when they are closed.
[0041] Figure 8 This is a three-dimensional schematic diagram of the first and second chucks when they are closed.
[0042] Figure 9 This is a three-dimensional schematic diagram of the guide rail base.
[0043] Figure 10 This is a side view of the guide rail base.
[0044] Marked in the image:
[0045] 1-Motor,
[0046] 2-Outer shell,
[0047] 3-Guide rail base,
[0048] 301-Top Slab
[0049] 3011 - First Groove
[0050] 302-base plate,
[0051] 3021 - Second groove,
[0052] 303-Side panel,
[0053] 3031 - Through hole, 3032 - Protrusion block
[0054] 304-inner cavity,
[0055] 305 - Opening
[0056] 4-First guide rail,
[0057] 5-Second guide rail,
[0058] 6-First slider,
[0059] 7-Second slider,
[0060] 8-First chuck,
[0061] 9-Second chuck,
[0062] 10-Cable,
[0063] 11-Gear set,
[0064] 12-lead screw,
[0065] 13-First nut,
[0066] 14-Second nut,
[0067] 15-First connecting arm,
[0068] 16 - Second connecting arm. Detailed Implementation
[0069] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.
[0070] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.
[0071] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.
[0072] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.
[0073] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.
[0074] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.
[0075] Example 1
[0076] A clamp structure includes a guide rail base 3, a first guide rail 4, a second guide rail 5, a first slider 6, and a second slider 7.
[0077] The guide rail base 3 has an inner cavity 304, which is open. An opening 305 is provided on one side of the guide rail base 3 along the axial direction of the guide rail base 3, and the opening 305 is connected to the inner cavity 304.
[0078] The first guide rail 4 and the second guide rail 5 are respectively installed on opposite sides of the cavity wall of the inner cavity 304, and both the first guide rail 4 and the second guide rail 5 are arranged along the axial direction of the guide rail base 3. Specifically, the length of the first guide rail 4 and the second guide rail 5 is 80mm to 120mm, and the specific length can be 80mm, 90mm, 100mm, 110mm, or 120mm.
[0079] The first slider 6 is slidably engaged with the first guide rail 4. The first slider 6 is connected to the first chuck 8, and the cantilever end of the first chuck 8 extends out of the guide rail base 3 from the opening 305.
[0080] The second slider 7 is slidably engaged with the second guide rail 5. The second slider 7 is connected to the second chuck 9, and the cantilever end of the second chuck 9 extends out of the guide rail base 3 from the opening 305.
[0081] Along the length of the first guide rail 4, the cantilever end of the first chuck 8 corresponds to the cantilever end of the second chuck 9.
[0082] Along the radial direction of the first guide rail 4, the first slider 6 and the second slider 7 can be staggered from each other.
[0083] Specifically, the first slider 6 and the second slider 7 are staggered in the vertical direction, and the vertical distance between the first slider 6 and the second slider 7 is 6mm to 14mm, specifically 6mm, 8mm, 10mm, 12mm, or 14mm.
[0084] Specifically, the first chuck 8 and the second chuck 9 can be connected to the first slider 6 and the second slider 7 respectively via L-shaped connecting blocks.
[0085] In an optional embodiment, the guide rail base 3 may include a top plate 301, a bottom plate 302, and a side plate 303, such as Figure 9 and Figure 10 As shown, the side plate 303 is located between the top plate 301 and the bottom plate 302. The inner side of the top plate 301 has a first groove 3011, and the inner side of the bottom plate 302 has a second groove 3021. The first guide rail 4 is installed in the first groove 3011, and the second guide rail 5 is installed in the second groove 3021. Specifically, the length of the guide rail base 3 can be 110mm. The first groove 3011 and the second groove 3021 are both arranged along the axial length of the guide rail base 3. The depth of the first groove 3011 and the depth of the second groove 3021 are both 1.5mm-2.5mm, specifically 1.5mm, 2.0mm, and 2.5mm. The upper and lower sides of the inner cavity 304 are the top plate 301 and the bottom plate 302, respectively. The left side of the inner cavity 304 is an opening 305, and the right side is the side plate 303.
[0086] Example 2
[0087] like Figures 1 to 6 As shown, a clamping device includes a driving device and a clamping structure as described in Embodiment 1.
[0088] The first slider 6 and the second slider 7 are both connected to the driving device. Under the drive of the driving device, the first slider 6 and the second slider 7 can move away from each other or move closer to each other.
[0089] In an optional embodiment, the driving device may include a motor 1, a lead screw 12, a first nut 13, and a second nut 14. The motor 1 is used to drive the lead screw 12 to rotate. The axial direction of the lead screw 12 is parallel to the axial direction of the guide rail base 3 of the fixture structure. The two ends of the lead screw 12 are respectively provided with threads in opposite directions. The first nut 13 and the second nut 14 are respectively installed at the two ends of the lead screw 12. The first nut 13 is connected to the first slider 6, and the second nut 14 is connected to the second slider 7.
[0090] In an optional embodiment, the side plate 303 of the guide rail base 3 may be provided with an elongated through hole 3031, such as... Figure 9As shown, the length of the through hole 3031 is arranged along the axial direction of the guide rail base 3. The lead screw 12 is located on the outside of the side plate 303. The first slider 6 is connected to the first nut 13 through the first connecting arm 15, and the second slider 7 is connected to the second nut 14 through the second connecting arm 16. Both the first connecting arm 15 and the second connecting arm 16 pass through the through hole 3031. Specifically, the distance between the axis of the lead screw 12 and the outer surface of the side plate 303 is 8mm to 10mm, specifically 8mm, 9mm, or 10mm. The lead screw 12 has a diameter of 6mm and a length of 105mm. The through hole 3031 has the following dimensions: length 68mm, height 12mm, and depth 5mm.
[0091] In an optional embodiment, the first connecting arm 15 can be bolted to the top surface of the first nut 13, and the second connecting arm 16 can be bolted to the bottom surface of the second nut 14.
[0092] In an optional embodiment, a protrusion 3032 may be provided on the outer side of the side plate 303, and the lead screw 12 is mounted on the protrusion 3032 via a bearing. Specifically, a through circular hole is provided on the protrusion 3032, the axis of the circular hole is parallel to the axis of the guide rail base 3, the outer ring of the bearing is fixed to the wall of the circular hole, and the lead screw 12 passes through the inner ring of the bearing and is fixed to the inner ring.
[0093] In an optional embodiment, the motor 1, lead screw 12, and guide rail base 3 can be arranged side by side, with the lead screw 12 located between the motor 1 and the guide rail base 3. The motor 1 drives the lead screw 12 to rotate via a gear set 11. Specifically, the gear set 11 includes three gears: the first gear is mounted on the motor shaft of the motor 1, the second gear is mounted on the lead screw 12, and the third gear connects the first and second gears. The distance between the motor 1 and the outer surface of the side plate 303 is 20mm to 24mm, specifically 20mm, 21mm, 22mm, 23mm, and 24mm.
[0094] In an optional embodiment, the motor 1 and the guide rail base 3 can be connected via the housing 2, with the lead screw 12, first nut 13, second nut 14, and gear set 11 all located inside the housing 2. Specifically, the housing 2 and the guide rail base 3 are bolted together, and the housing 2 and the front end cover of the motor 1 are bolted together. The cross-sectional heights of the motor 1, the guide rail base 3, and the housing 2 are all the same, ranging from 38mm to 42mm, specifically 38mm, 39mm, 40mm, 41mm, and 42mm.
[0095] In an optional implementation, motor 1 may be a servo motor. A cable 10 is provided on the rear end cover of motor 1, which is used to connect the power supply and the controller.
[0096] After the first slider 6 and the second slider 7 are connected to the first chuck 8 and the second chuck 9 respectively, the clamping device can perform specific clamping tasks. To meet diverse needs, the chucks can be replaced according to actual requirements. For example... Figure 7 and Figure 8 As shown, when the clamping plates of the first chuck 8 and the second chuck 9 close in opposite directions, the first slider 6 and the second slider 7 will align and overlap in the vertical direction.
[0097] In this application, the first guide rail 4 and the second guide rail 5 are designed to be of equal length and arranged side by side, one above the other. In practical operation, one adjustment method exists: the first connecting arm 15 is connected to the second nut 14, and the second connecting arm 16 is connected to the first nut 13. This connection method can change the movement position of the sliders: the first slider 6, which originally slid to the left of the first guide rail 4, can now slide to the right of the first guide rail 4; correspondingly, the second slider 7, which originally slid to the right of the second guide rail 5, can now slide to the left of the second guide rail 5. This design makes the clamping device more versatile in its use and enhances its flexibility.
[0098] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A clamp configuration, characterized by The utility model relates to a kind of clamp structures, comprising: Guide rail base (3), the inner cavity (304) is provided with on the guide rail base (3), the inner cavity (304) is provided with opening (305) in the axial direction of the guide rail base (3) on one side of the guide rail base (3), the opening (305) is communicated with the inner cavity (304); First guide rail (4) and second guide rail (5), the first guide rail (4) and the second guide rail (5) are respectively installed in the cavity wall of the inner cavity (304) opposite two sides, the first guide rail (4) and the second guide rail (5) are arranged in the axial direction of the guide rail base (3); First slider (6), the first slider (6) is slidably connected with the first guide rail (4), the first slider (6) is connected with first chuck (8), and the cantilever end of the first chuck (8) extends out of the guide rail base (3) from the opening (305); Second slider (7), the second slider (7) is slidably connected with the second guide rail (5), the second slider (7) is connected with second chuck (9), and the cantilever end of the second chuck (9) extends out of the guide rail base (3) from the opening (305); In the length direction of the first guide rail (4), the cantilever end of the first chuck (8) corresponds with the cantilever end of the second chuck (9); In the radial direction of the first guide rail (4), the first slider (6) and the second slider (7) can be staggered with each other.
2. The fixture configuration of claim 1, wherein The guide rail base (3) includes top plate (301), bottom plate (302) and side plate (303), the side plate (303) is located between the top plate (301) and the bottom plate (302), the inner side of the top plate (301) is provided with first groove (3011), the inner side of the bottom plate (302) is provided with second groove (3021), the first guide rail (4) is installed in the first groove (3011), and the second guide rail (5) is installed in the second groove (3021).
3. A clamp device, characterized by The utility model relates to a kind of clamp structures, comprising:
4. A clamp device according to claim 3, wherein The driving device includes motor (1), screw rod (12), first nut (13) and second nut (14), the motor (1) is used to drive the rotation of the screw rod (12), the axial direction of the screw rod (12) is parallel with the axial direction of the guide rail base (3) of the clamp structure, the two ends of the screw rod (12) are respectively provided with opposite direction thread, the first nut (13) and the second nut (14) are respectively installed in the two ends of the screw rod (12), the first nut (13) is connected with the first slider (6), and the second nut (14) is connected with the second slider (7).
5. A clamp apparatus according to claim 4, wherein The side plate (303) of the guide rail base (3) is provided with a long strip-shaped through hole (3031), the length direction of the through hole (3031) is arranged along the axial direction of the guide rail base (3), the lead screw (12) is located outside the side plate (303), the first sliding block (6) is connected with the first nut (13) through a first connecting arm (15), the second sliding block (7) is connected with the second nut (14) through a second connecting arm (16), and the first connecting arm (15) and the second connecting arm (16) both pass through the through hole (3031).
6. A clamp apparatus according to claim 5, wherein The first connecting arm (15) is bolted on the top surface of the first nut (13), and the second connecting arm (16) is bolted on the bottom surface of the second nut (14).
7. The gripper device of claim 5, wherein The outside of the side plate (303) is provided with a protruding block (3032), and the lead screw (12) is mounted on the protruding block (3032) through a bearing.
8. A clamp device according to any one of claims 5-7, characterized in that The motor (1), the lead screw (12) and the guide rail base (3) are arranged side by side, the lead screw (12) is located between the motor (1) and the guide rail base (3), and the motor (1) drives the lead screw (12) to rotate through a gear set (11).
9. A clamp apparatus according to claim 8, wherein, The motor (1) and the guide rail base (3) are connected through a shell (2), and the lead screw (12), the first nut (13), the second nut (14) and the gear set (11) are all located inside the shell (2).
10. The clamp apparatus of claim 8, wherein, The motor (1) is a servo motor.