An auxiliary clamping structure applied to a machining clamp

Abstract

The utility model discloses an auxiliary clamping structure for machining clamp, include: linear motion mechanism, first clamping block, second clamping block and fixed block, linear motion mechanism includes body and telescopic spare, telescopic spare can be from body top or retract, first clamping block's upper end is equipped with first clamping part, second clamping block's upper end is equipped with second clamping part, second clamping part, first clamping part is opposite, second clamping block's lower extreme is connected with telescopic spare, and second clamping block's middle part is hinged with fixed block, and second clamping block rotates around the position of hinging with fixed block in telescopic spare's toping, to make second clamping part and first clamping part opposite movement, and second clamping block rotates around the position of hinging with fixed block in telescopic spare's retraction, to make second clamping part and first clamping part away from movement. Through a linear motion mechanism, a fixed block and two clamping blocks realize clamping and loosening function, and the number of parts is less, compact structure, saves installation space, can reduce the cost of investment.

Description

Technical Field

[0001] This utility model relates to the field of parts processing, and in particular to an auxiliary clamping structure applied to machining fixtures. Background Technology

[0002] During machining, parts need to be clamped using fixtures. Fixtures consist of a main clamping structure and an auxiliary clamping structure. The auxiliary clamping structure mostly uses a traditional floating support cylinder + pneumatic cylinder clamping configuration. This is difficult to implement extensively in machining fixtures with limited space; furthermore, the cost of extensively using the traditional floating support cylinder + pneumatic cylinder configuration would significantly increase the cost, hindering large-scale project development. Therefore, a simplified auxiliary clamping structure is needed to reduce costs while ensuring machining efficiency and quality. Utility Model Content

[0003] Therefore, there is a need to provide an auxiliary clamping structure for machining fixtures that is simpler in structure and reduces costs while ensuring the efficiency and quality of part machining.

[0004] To achieve the above objectives, the inventors provide an auxiliary clamping structure for use in machining fixtures, the auxiliary clamping structure comprising: a linear motion mechanism, a first clamping block, a second clamping block, and a fixing block;

[0005] The linear motion mechanism includes a body and a telescopic component, which can be pushed out or retracted from the body.

[0006] The upper end of the first clamping block is provided with a first clamping part;

[0007] The upper end of the second clamping block is provided with a second clamping part, the second clamping part and the first clamping part are directly opposite each other, the lower end of the second clamping block is connected to the telescopic member, the middle part of the second clamping block is hinged to the fixed block, the second clamping block rotates around the position hinged to the fixed block during the extension of the telescopic member, so that the second clamping part and the first clamping part move towards each other to achieve clamping, and the second clamping block rotates around the position hinged to the fixed block during the retraction of the telescopic member, so that the second clamping part and the first clamping part move away from each other to achieve release.

[0008] Furthermore, the lower end of the second clamping block is provided with a sliding groove, and when the second clamping block is perpendicular to the horizontal direction, the sliding groove is also perpendicular to the horizontal direction;

[0009] The telescopic component can be pushed out or retracted from the body in a horizontal direction. A slider is provided on the telescopic component at the position corresponding to the slide groove. The slider extends into the slide groove and slides in connection with the slide groove, so that the lower end of the second clamping block is connected to the telescopic component.

[0010] Furthermore, the slide includes two oval grooves arranged side by side in the horizontal direction and a receiving groove located between the two oval grooves. The telescopic member has two sliders, one end of which extends into the receiving groove and is slidably connected to one oval groove through a slider.

[0011] Furthermore, the linear motion mechanism is a cylinder, the body is the cylinder body, and the telescopic component includes a piston rod of the cylinder and a sleeve fitted on the piston rod, with the slider provided on the sleeve.

[0012] Furthermore, the lower end of the second clamping block is hinged to the telescopic member, and the second clamping block has a telescopic structure between the two hinged positions.

[0013] Furthermore, the first clamping part protrudes upward from the upper end of the first clamping block, and the second clamping part protrudes to the left or right from the upper end of the second clamping block, with the second clamping part located above the first clamping part.

[0014] Furthermore, the first clamping block is connected to the body and the fixing block respectively.

[0015] Furthermore, the linear motion mechanism is a pneumatic cylinder, a hydraulic cylinder, or an electric actuator.

[0016] Unlike existing technologies, the above technical solution achieves clamping and releasing functions through a linear motion mechanism, a fixed block, and two clamping blocks. It has fewer parts, a compact structure, saves installation space, and can reduce investment costs.

[0017] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0018] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this utility model and other related contents, and should not be considered as limitations on this application.

[0019] Figure 1 This is a perspective view of the auxiliary clamping structure in this embodiment;

[0020] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0021] Figure 3 for Figure 1Enlarged view of part B in the middle;

[0022] Figure 4 for Figure 1 Enlarged view of section C;

[0023] Figure 5 for Figure 1 Enlarged view of part D in the middle;

[0024] Figure 6 This is a perspective view of the auxiliary clamping structure and the machine tool in this embodiment.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Linear motion mechanism; 11. Body; 12. Telescopic component; 121. Piston rod; 122. Tube sleeve; 2. First clamping block; 21. First clamping part; 3. Second clamping block; 31. Second clamping part; 4. Fixed block; 5. Slide groove; 51. Oval groove; 52. Receiving groove; 6. Slider; 7. Auxiliary clamping structure; 8. Machine tool. Detailed Implementation

[0027] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0028] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0029] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0030] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0031] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0032] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar open-ended expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0033] As understood in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0034] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0035] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral arrangement; it can be a direct connection or an indirect connection through an intermediate medium; it can be a relationship of two components combined together, an interaction relationship between two components, or a connection within two structures. Those skilled in the art to which this application pertains can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0036] Please see Figures 1 to 6 This embodiment provides an auxiliary clamping structure for use in machining fixtures. Machining refers to the process of using a machine tool 8 to perform operations such as cutting, milling, drilling, turning, and grinding on parts (such as metals and plastics) to obtain parts with specific shapes, dimensions, and surface precision. The auxiliary clamping structure is installed on the machine tool 8 used for machining.

[0037] The auxiliary clamping structure includes: a linear motion mechanism 1, a first clamping block 2, a second clamping block 3, and a fixing block 4; the linear motion mechanism 1 includes a body 11 and a telescopic member 12, which can be pushed out or retracted from the body 11; the upper end of the first clamping block 2 is provided with a first clamping part 21; the upper end of the second clamping block 3 is provided with a second clamping part 31, the second clamping part 31 and the first clamping part 21 are directly opposite each other, the lower end of the second clamping block 3 is connected to the telescopic member 12, and the middle part of the second clamping block 3 is hinged to the fixing block 4. The second clamping block 3 rotates around the hinged position with the fixing block 4 during the push-out of the telescopic member 12, so that the second clamping part 31 and the first clamping part 21 move towards each other to achieve clamping. During the retraction of the telescopic member 12, the second clamping block 3 rotates around the hinged position with the fixing block 4, so that the second clamping part 31 and the first clamping part 21 move away from each other to achieve release.

[0038] The linear motion mechanism 1 is a mechanical component that converts driving force into linear reciprocating motion. The telescopic component 12 is the actuating part of the linear motion mechanism 1 and can perform linear reciprocating motion in the body 11.

[0039] Please see Figure 1 The first clamping block 2 and its first clamping part 21 are located to the left of the second clamping block 3 and its second clamping part 31. The linear motion mechanism 1 is located to the left of the first clamping block 2, and the fixing block 4 is located to the right of the second clamping block 3. When the telescopic component 12 retracts in the opposite direction, the lower end of the second clamping block 3 is pushed to the right, causing the upper part of the second clamping block 3 to rotate counterclockwise around the hinge position of the fixing block 4. This rotation causes the second clamping part 31 at the upper end of the second clamping block 3 to rotate toward the first clamping part 21, forming a clamping force on the parts between them. When the telescopic component 12 retracts in the opposite direction, the lower end of the second clamping block 3 is pushed to the left, causing the upper part of the second clamping block 3 to rotate clockwise around the hinge position. The second clamping part 31 separates from the first clamping part 21, achieving release and completing the reset.

[0040] This structure achieves clamping and releasing functions using only one linear motion mechanism 1, one fixed block 4, and two clamping blocks. It has fewer parts, a compact structure, saves installation space, and can reduce investment costs.

[0041] Please see Figure 1 and Figure 2In some embodiments, the lower end of the second clamping block 3 is provided with a groove 5. When the second clamping block 3 is perpendicular to the horizontal direction, the groove 5 is also perpendicular to the horizontal direction. The telescopic member 12 can be pushed out or retracted from the body 11 in the horizontal direction. A slider 6 is provided on the telescopic member 12 at a position corresponding to the groove 5. The slider 6 extends into the groove 5 and slides in connection with the groove 5, so that the lower end of the second clamping block 3 is connected to the telescopic member 12. The groove 5 extends along the length direction of the second clamping block 3. When the second clamping block 3 is in a natural vertical state (i.e., its length direction is perpendicular to the horizontal plane), the direction of the groove 5 is also perpendicular to the horizontal direction (i.e., the groove 5 is vertical). When the telescopic member 12 moves, the relative sliding of the slider 6 in the groove 5 drives the second clamping block 3 to rotate around the central hinge position.

[0042] Please see Figure 1 and Figure 2 In some embodiments, the slide 5 includes two oval grooves 51 arranged side by side in the horizontal direction and a receiving groove 52 located between the two oval grooves 51. The telescopic member 12 has two sliders 6. One end of the telescopic member 12 (the end with the slider 6, away from the body 11) extends into the receiving groove 52, and each slider 6 is slidably connected to one oval groove 51. The two oval grooves 51 are symmetrically arranged on both sides of the receiving groove 52, and the receiving groove 52 accommodates one end of the telescopic member 12 extending into it. The two sliders 6 on the telescopic member 12 correspond to and are embedded in the oval grooves 51 on both sides, forming a sliding pair. When the linear motion mechanism 1 drives the telescopic member 12 to push out or retract in the horizontal direction, the sliders 6 slide relative to each other within the oval grooves 51, thereby converting the horizontal linear motion of the telescopic member 12 into the swinging motion of the second clamping block 3 around its central hinge point, achieving the clamping or releasing function.

[0043] Please see Figure 1 In some embodiments, the linear motion mechanism 1 is a cylinder, the body 11 is the cylinder body, and the telescopic member 12 includes a piston rod 121 of the cylinder and a sleeve 122 fitted on the piston rod 121. The sleeve 122 has sliders 6. The cylinder body, as the body 11, can be mounted on a machine tool 8. The piston rod 121 extends or retracts horizontally. A sleeve 122 is fixedly fitted around the outer periphery of the front end of the piston rod 121 (e.g., axial and circumferential fixation is achieved by radial pins, set screws, or interference fits). Two sliders 6 may be provided on the outer wall of the sleeve 122.

[0044] In other embodiments, unlike the structure of the slide groove 5 and the slider 6, the lower end of the second clamping block 3 is hinged to the telescopic member 12, and the second clamping block 3 has a telescopic structure between two hinged positions. The two hinged positions are: the position where the middle part of the second clamping block 3 is hinged to the fixed block 4, and the position where the lower end of the second clamping block 3 is hinged to the telescopic member 12. The telescopic structure may include two relatively sliding sleeves, so that the middle part of the second clamping block 3 is telescopic.

[0045] Please see Figure 1 , Figure 4 and Figure 5 In some embodiments, the first clamping part 21 protrudes upward from the upper end of the first clamping block 2, and the second clamping part 31 protrudes to the left or right from the upper end of the second clamping block 3, with the second clamping part 31 located above the first clamping part 21. The first clamping part 21 and the second clamping part 31 have a protrusion-like structure, which facilitates clamping the workpiece from both sides. Optionally, raised and recessed stripes can be added to the first clamping part 21 and the second clamping part 31 to increase the frictional force during contact.

[0046] Please see Figure 1 In some embodiments, the first clamping block 2 is disposed on the body 11. Optionally, the first clamping block 2 has a slot extending in a horizontal direction, the position of which is aligned with the movement trajectory of the telescopic member 12, so that when the first clamping block 2 is installed on the body 11, the telescopic member 12 can pass through the slot without interference. The first clamping block 2 is fixed to the body 11 or a bracket connected to the body 11 by fasteners (such as bolts) or quick-release structures (such as snaps).

[0047] In some embodiments, the linear motion mechanism 1 is a pneumatic cylinder, a hydraulic cylinder, or an electric actuator. When a pneumatic cylinder is used, the structure is as follows: Figure 1 As shown, it uses compressed air as a power source and has the advantages of simple structure, rapid response, and low cost. When a hydraulic cylinder is used, it can provide greater output thrust. When an electric actuator is used, the extension stroke and speed can be precisely controlled by a servo motor or stepper motor, making it easy to integrate into a digital production line.

[0048] Please see Figure 1 and Figure 6 In some embodiments, the first clamping block 2 is connected to the body 11 and the fixing block 4 respectively. The fixing block 4 can be bolted to the machine tool 8 for machining and is used to support the first clamping block 2, the second clamping block 3, and the linear motion mechanism 1.

[0049] In some embodiments, the body 11 and the fixing block 4 of the linear motion mechanism 1 can be respectively mounted on the machine tool 8.

[0050] The beneficial effects of this application are described below:

[0051] This auxiliary clamping structure can be manufactured using commercially available traditional cylinders in conjunction with custom-designed non-standard clamping blocks. This not only reduces equipment investment costs but is also simpler and saves installation space compared to the traditional floating support cylinder + auxiliary cylinder clamping method. Furthermore, it can be applied to automated fixtures, making it suitable for a wider range of applications.

[0052] In addition, this structure also has a unidirectional floating function, which can adapt to the deformation of the product to a certain extent, thereby ensuring the quality of product processing.

[0053] Its simple structure and low manufacturing cost enable it to be widely used. It effectively optimizes the space occupied by the fixture while ensuring processing quality, thus making product quality effectively controllable.

[0054] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. An auxiliary clamping structure applied to machining fixtures, characterized in that, The auxiliary clamping structure includes: a linear motion mechanism, a first clamping block, a second clamping block, and a fixing block; The linear motion mechanism includes a body and a telescopic component, which can be pushed out or retracted from the body. The upper end of the first clamping block is provided with a first clamping part; The upper end of the second clamping block is provided with a second clamping part, the second clamping part and the first clamping part are directly opposite each other, the lower end of the second clamping block is connected to the telescopic member, the middle part of the second clamping block is hinged to the fixed block, the second clamping block rotates around the position hinged to the fixed block during the extension of the telescopic member, so that the second clamping part and the first clamping part move towards each other to achieve clamping, and the second clamping block rotates around the position hinged to the fixed block during the retraction of the telescopic member, so that the second clamping part and the first clamping part move away from each other to achieve release.

2. The auxiliary clamping structure according to claim 1, characterized in that, The lower end of the second clamping block is provided with a sliding groove, and when the second clamping block is perpendicular to the horizontal direction, the sliding groove is also perpendicular to the horizontal direction; The telescopic component can be pushed out or retracted from the body in a horizontal direction. A slider is provided on the telescopic component at the position corresponding to the slide groove. The slider extends into the slide groove and slides in connection with the slide groove, so that the lower end of the second clamping block is connected to the telescopic component.

3. The auxiliary clamping structure according to claim 2, characterized in that, The slide includes two oval grooves arranged side by side in the horizontal direction and a receiving groove located between the two oval grooves. The telescopic member has two sliders, one end of which extends into the receiving groove and is slidably connected to one oval groove through a slider.

4. The auxiliary clamping structure according to claim 2 or 3, characterized in that, The linear motion mechanism is a cylinder, the body is the cylinder body, and the telescopic component includes the piston rod of the cylinder and a sleeve sleeved on the piston rod, with the slider provided on the sleeve sleeve.

5. The auxiliary clamping structure according to claim 1, characterized in that, The lower end of the second clamping block is hinged to the telescopic member, and the second clamping block has a telescopic structure between the two hinged positions.

6. The auxiliary clamping structure according to claim 1, characterized in that, The first clamping part protrudes upward from the upper end of the first clamping block, and the second clamping part protrudes to the left or right from the upper end of the second clamping block, with the second clamping part located above the first clamping part.

7. The auxiliary clamping structure according to claim 1, characterized in that, The first clamping block is connected to the main body and the fixing block respectively.

8. The auxiliary clamping structure according to claim 1, characterized in that, The linear motion mechanism is a pneumatic cylinder, a hydraulic cylinder, or an electric actuator.

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