Lathe backward-pulling pressing type clamp

Abstract

The utility model provides a backward-pulling compression type clamp for a lathe. The backward-pulling compression type clamp is characterized in that a through hole is formed in the middle of a chuck; open slots for placing the pull arms in a penetrating manner are formed in two sides of the chuck; the rear end of the chuck is connected with a spindle of the lathe; the clamp base is arranged on the front side of the chuck; the tightening device comprises a pulling seat and a pulling arm; the pulling seat is arranged in the pulling hole, the two sides of the pulling seat are connected with the pulling arms respectively, and the tail end of each pulling arm is provided with a clamping hand; the clamping hand abuts against the front side of a workpiece, the clamp base abuts against the rear side of the workpiece, and the workpiece is clamped by the clamping hand and the clamp base. According to the utility model, the clamping hands can be correspondingly close to or far away from the clamp base by driving the pull arms, so that a workpiece is clamped or loosened.

Description

Technical Field

[0001] The utility model belongs to the technical field of lathe clamps, and more specifically, relates to the technical field of a lathe back-pull clamp. Background Art

[0002] In traditional lathe processing, the design and use of fixtures are key factors to ensure the accuracy and efficiency of workpiece processing. However, due to the limitations of technical level and design concept, traditional fixtures face a series of challenges and problems in practical applications.

[0003] First, operational complexity is a significant issue. Traditional clamps usually require operators to manually clamp and release, which not only increases the operator's labor intensity, but also is prone to errors in operation. Manual operation is difficult to achieve precise control, resulting in inconsistent clamping force, which may cause uneven deformation or damage to the workpiece during processing, especially when processing thin-walled parts or fragile materials.

[0004] Secondly, traditional fixtures may cause damage to the workpiece surface. Due to uneven clamping force or unreasonable design of the contact surface between the fixture and the workpiece, indentations or scratches may be left on the workpiece surface, which is unacceptable in precision machining. In addition, the material and surface treatment of some fixtures may not be suitable for specific workpiece materials, further increasing the risk of damage. Summary of the invention

[0005] The purpose of the embodiment of the utility model is to provide a lathe back-pull clamping fixture to solve the technical problems of unstable workpiece clamping and uneven clamping force in the prior art.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: a lathe back-pull clamping fixture, comprising:

[0007] A chuck, wherein a through hole is provided in the middle of the chuck; opening grooves for placing the pull arms are provided on both sides of the chuck; and the rear end of the chuck is connected to the main shaft of the lathe;

[0008] A fixture base, the fixture base is arranged on the front side of the chuck;

[0009] A tensioning device, the tensioning device includes a pulling seat and the pulling arm; the pulling seat is arranged in the through hole, the two sides of the pulling seat are respectively connected to the pulling arms, and a clamping hand is provided at the end of each pulling arm; the clamping hand is against the front side of the workpiece, and the clamp base is against the rear side of the workpiece, and the workpiece is clamped by the clamping hand and the clamp base.

[0010] Optionally, a connecting seat is provided in front of the pulling seat, and one end of the pulling arm is hinged to both sides of the connecting seat.

[0011] Optionally, a connecting column is provided on the front side of the pull seat, and a connecting groove is provided on the rear side of the connecting seat, and the connecting column matches the connecting groove.

[0012] Optionally, the gripper is a U-shaped structure, and the middle portion of the U-shaped structure is connected to the end of the pulling arm.

[0013] Optionally, retreat grooves are provided on both sides of the clamp base, and the pulling arm passes through the retreat grooves.

[0014] Optionally, a guide groove is provided on one side of the pulling arm, a guide column is provided in the guide groove, and the guide column passes through the pulling arm and the clamp base.

[0015] Optionally, the guide groove moves from the inner side of the pulling arm to the outer side of the pulling arm from the back to the front.

[0016] Optionally, a groove is provided on the rear side of the pull seat, and a plurality of mounting holes are provided in the groove.

[0017] The utility model provides a lathe rear-pull clamping clamp with the beneficial effect that, compared with the prior art, the utility model provides a through placement space for the pull arm through the opening grooves arranged on both sides of the chuck, so that the pull arm can move forward and backward smoothly.

[0018] The utility model drives the pulling arm so that the clamping hand can be moved close to or away from the clamping base accordingly, thereby achieving clamping or loosening of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 A three-dimensional diagram of a lathe rear-pull clamping fixture provided by an embodiment of the utility model in the main viewing direction;

[0021] Figure 2 A front view of a lathe rear-pull clamp provided by an embodiment of the utility model;

[0022] Figure 3 A three-dimensional diagram of a lathe rear-pull clamping fixture provided by an embodiment of the utility model in a rear-view direction;

[0023] Figure 4A three-dimensional diagram of a pull seat, a connecting seat, a pull arm and a clamp base of a lathe rear-pull clamping clamp provided by an embodiment of the utility model in the rear-view direction;

[0024] Figure 5 A front view of a pull seat, a connecting seat, a pull arm and a clamp base of a lathe rear-pull clamping clamp provided by an embodiment of the utility model in the rear-view direction;

[0025] Figure 6 A rear view of a chuck of a lathe rear-pull clamping fixture provided by an embodiment of the utility model;

[0026] Figure 7 A three-dimensional diagram of a chuck of a lathe rear-pull clamping fixture provided by an embodiment of the utility model in a rear-view direction;

[0027] Figure 8 A three-dimensional diagram of a pull seat, a connecting seat, a pull arm and a clamping hand of a lathe rear pull clamping clamp provided by an embodiment of the utility model;

[0028] Fig. 9 A three-dimensional diagram of a pull seat of a lathe rear-pull clamping fixture provided by an embodiment of the utility model;

[0029] Fig.10 A three-dimensional diagram of a connecting seat of a lathe rear-pull clamp provided in an embodiment of the utility model.

[0030] Among them, the reference numerals in the figure are:

[0031] 1. Chuck; 11. Through hole; 2. Clamp base; 21. Retraction groove; 31. Pull seat; 311. Connecting column; 32. Pull arm; 321. Guide groove; 322. Guide column; 33. Clamp hand; 34. Connecting seat; 341. Connecting groove; 4. Workpiece. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] Please also read Figures 1 to 10 , now a lathe back-pull clamping fixture provided by the embodiment of the utility model includes:

[0037] A chuck 1, a through hole 11 is provided in the middle of the chuck 1; opening grooves 12 are provided on both sides of the chuck 1 for placing the pull arm 32; the rear end of the chuck 1 is connected to the main shaft of the lathe;

[0038] A clamp base 2, which is arranged at the front side of the chuck 1;

[0039] The tensioning device 3 includes a pulling seat 31 and two pulling arms 32; the pulling seat 31 is arranged in the through hole 11, and a pulling arm 32 is connected to each side of the pulling seat 31, and a clamping hand 33 is provided at the end of each pulling arm 32; the clamping hand 33 is against the front side of the workpiece 4, and the clamp base 2 is against the rear side of the workpiece 4, and the clamping hand 33 and the clamp base 2 clamp the workpiece 4.

[0040] The utility model provides a lathe back-pull clamping type clamp. Compared with the prior art, the utility model provides a through placement space for the pull arm 32 by setting the opening grooves 12 on both sides of the chuck 1, so that the pull arm 32 can move forward and backward smoothly; in addition, the utility model connects the two pull arms 32 through a pull seat 31, and realizes the simultaneous advance and retreat of the two pull arms 32 by moving the pull seat 31, thereby avoiding uneven clamping force. In addition, the utility model drives the pull arm 32, and the clamping hand 33 can be close to or away from the clamp base 2 accordingly, thereby achieving clamping or loosening of the workpiece 4.

[0041] In another embodiment of the present invention, please refer to Figure 8 and Fig.10A connecting seat 34 is provided in front of the pull seat 31, and one end of the pull arm 32 is hinged on both sides of the connecting seat 311. By adding the connecting seat 34, when the pull arm 32 needs to be repaired or replaced, it can be easily disassembled and assembled, reducing the maintenance cost and time cost; in addition, by hingedly connecting the pull arm 32 on both sides of the connecting seat 34, the structure of the entire tensioning device is more stable. This connection method can effectively disperse the effect of external force on the pull arm 32, reduce deformation or damage caused by uneven force, and thus improve the overall stability and service life of the clamp.

[0042] In another embodiment of the present invention, please refer to Fig. 9 and 10 A connecting column 311 is provided on the front side of the pull seat 31, and a connecting groove 341 is provided on the rear side of the connecting seat 34, and the connecting column 311 and the connecting groove 341 match each other. The connection between the pull seat 31 and the connecting seat 34 is more firm and reliable. This tight connection method can effectively prevent the clamp from loosening due to vibration or external force during operation, thereby ensuring the stability and processing accuracy of the clamp. The matching design of the connecting column 311 and the connecting groove 341 makes the assembly process of the pull seat 31 and the connecting seat 34 simple and quick. The operator only needs to align the connecting column 311 with the connecting groove 341 and insert it to complete the connection between the two, without using additional tools or performing complicated operations, thereby improving assembly efficiency.

[0043] In another embodiment of the present invention, please refer to Figure 1 The gripper 33 is a U-shaped structure, and the middle of the U-shaped structure is connected to the end of the pull arm 32. The gripper 33 of the U-shaped structure can more firmly clamp the workpiece 4. Its opening design enables the gripper 33 to fit closely to the surface of the workpiece 4, reducing sliding or offset during clamping, thereby improving stability during processing.

[0044] In another embodiment of the present invention, please refer to Figure 4 , retreat grooves 21 are provided on both sides of the clamp base 2, and the pull arm 32 passes through the retreat grooves 21. By providing the retreat grooves 21 on both sides of the clamp base 2, the spatial layout inside the clamp can be optimized. The pull arm 32 will not interfere with the clamp base 2 during movement, reducing unnecessary friction and wear, and extending the service life of the clamp.

[0045] In another embodiment of the present invention, please refer to Figure 8A guide groove 321 is provided on one side of the pulling arm 32, and a guide column 322 is provided in the guide groove 321. The guide column 322 penetrates the pulling arm 32 and the fixture base 2. The precise matching of the guide column 322 and the guide groove 321 can ensure the precise position control of the pulling arm 32 during the movement. This helps to improve the clamping accuracy and processing accuracy of the fixture on the workpiece 4, and reduce quality problems caused by motion errors; in addition, the penetration design of the guide column 322 effectively prevents the pulling arm 32 from deflecting or shaking when subjected to force, thereby enhancing the stability of the entire fixture structure.

[0046] In another embodiment of the present invention, please refer to Figure 8 The guide groove 321 moves from the inner side of the pulling arm 32 to the outer side of the pulling arm 32 from the back to the front, thereby controlling the movement trajectory of the pulling arm 32; when the pulling arm 32 is located at the initial position, that is, the front side, the pulling arm 32 is in an open state; when the pulling arm 32 moves backward, the pulling arm 32 will tighten, thereby making the pulling arm 32 parallel, and finally making the clamping hand 33 and the clamp base 2 clamp the workpiece 4.

[0047] In another embodiment of the present invention, please refer to Fig. 9 A groove 311 is provided on the rear side of the pull seat 31, and a plurality of mounting holes are provided in the groove 311. A plurality of mounting holes are provided in the groove 311. The positions and numbers of these mounting holes are carefully designed to ensure that they can meet the needs of practical applications. The existence of the mounting holes means that we can fix or connect the pull seat 31 with other components or structures through these holes. Specifically, these mounting holes are used to install screws, bolts or other fasteners so as to firmly mount the pull seat 31 at the required position of the vehicle window. In this way, the pull seat 31 can form a stable whole with the surrounding components or structures, thereby improving the stability and reliability of the entire device or system. In addition, the design of the groove 311 can also reduce the weight of the pull seat 31, which helps to reduce the cost of the entire device or system.

[0048] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present invention belong to the scope protected by the present invention.

Claims

1. A lathe back-pull clamp, characterized in that: include: A chuck, wherein a through hole is provided in the middle of the chuck; opening grooves for placing the pull arms are provided on both sides of the chuck; and the rear end of the chuck is connected to the main shaft of the lathe; A fixture base, the fixture base is arranged on the front side of the chuck; A tensioning device, the tensioning device includes a pulling seat and the pulling arm; the pulling seat is arranged in the through hole, the two sides of the pulling seat are respectively connected to the pulling arms, and a clamping hand is provided at the end of each pulling arm; the clamping hand is against the front side of the workpiece, and the clamp base is against the rear side of the workpiece, and the workpiece is clamped by the clamping hand and the clamp base.

2. A lathe back-pull clamp as claimed in claim 1, characterized in that: A connecting seat is arranged in front of the pulling seat, and one end of the pulling arm is hingedly connected to two sides of the connecting seat respectively.

3. A lathe back-pull clamping fixture as claimed in claim 2, characterized in that: A connecting column is provided on the front side of the pull seat, and a connecting groove is provided on the rear side of the connecting seat, and the connecting column matches the connecting groove.

4. A lathe back-pull clamping fixture as claimed in claim 1, characterized in that: The gripper is a U-shaped structure, and the middle part of the U-shaped structure is connected to the end of the pulling arm.

5. The lathe back-pull clamping fixture according to claim 1, characterized in that: Both sides of the clamp base are provided with retreat grooves, and the pulling arm passes through the retreat grooves.

6. A lathe back-pull clamping fixture as claimed in claim 5, characterized in that: A guide groove is arranged on one side of the pulling arm, a guide column is arranged in the guiding groove, and the guiding column passes through the pulling arm and the clamp base.

7. A lathe back-pull clamping fixture as claimed in claim 6, characterized in that: The guide groove moves from the inner side of the pulling arm to the outer side of the pulling arm from the back to the front.

8. The lathe back-pull clamping fixture as claimed in claim 5, characterized in that: A groove is arranged on the rear side of the pull seat, and a plurality of mounting holes are arranged in the groove.

Images