Pre-pressing clamp

Abstract

The utility model relates to the technical field of machining, in particular to a prepressing clamp which comprises a base, a gland, an actuating piece and a prepressing assembly, the base is used for being matched with the gland together to clamp a workpiece, the actuating piece is used for driving the gland to be close to or away from the base so as to control the base and the gland to clamp or release the workpiece, and the prepressing assembly is used for pressing the workpiece. The pre-pressing assembly is installed on the base and used for being matched with the gland in advance to clamp the workpiece before the base and the gland clamp the workpiece till the gland and the base clamp the workpiece together. According to the pre-pressing clamp, the pre-pressing assembly is matched with the gland in advance to clamp the workpieces until the gland and the base jointly clamp the workpieces, shaking of part of the workpieces in the process that the gland and the base clamp the multiple workpieces is effectively reduced, and therefore the fixing precision of the pre-pressing clamp on the workpieces is improved; therefore, the purpose of reducing machining damage of the workpiece is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a pre-pressing clamp. Background Art

[0002] A fixture is a tool used to fix the workpiece to be processed in order to improve the processing accuracy of the workpiece. In traditional technology, in order to improve processing efficiency, multiple workpieces to be processed are generally clamped at the same time by one fixture. However, when using a fixture to clamp multiple workpieces to be processed at the same time, the time and strength of the force applied by the fixture to each workpiece to be processed are different due to the accuracy of the fixture. When the fixture clamps multiple workpieces, it is easy for the workpiece with greater force to be fixed first, and the workpiece with less force will shake slightly under the influence of the direction of the force applied by the fixture, thereby affecting the fixing accuracy of each workpiece and further affecting the processing loss of the workpiece. Utility Model Content

[0003] Based on this, it is necessary to provide a pre-pressing fixture to address the technical problem that when a fixture clamps multiple workpieces, the machining loss of parts is affected by the clamping accuracy.

[0004] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod is pivotally connected to said linking rod of said wood-planer working table. said linking rod is pivotally connected to said linking rod of said wood-planer working table.

[0005] In one embodiment, the base includes a base body and a bottom plate, the base body is provided with the limiting groove, the sliding groove and the inner cavity, the bottom plate is connected to the base body and closes the inner cavity, and the connecting plate and the elastic member are both arranged in the inner cavity.

[0006] In one embodiment, the base plate includes a plate body and a mounting post, the plate body is connected to the base body, and the mounting post is sleeved with the elastic member.

[0007] In one embodiment, the base further includes a guide post connected to the base body, and the pressure cover is slidably connected to the guide post.

[0008] In one embodiment, the number of the guide pillars is four, and the four guide pillars are arranged along the edge of the base.

[0009] In one embodiment, the number of the limiting grooves corresponding to the sliding grooves is two, and the two sliding grooves are spaced apart along the length direction of the limiting groove.

[0010] In one embodiment, the number of the elastic members is two, and the two elastic members are arranged at intervals.

[0011] In one embodiment, the actuating member includes a screw and a turntable. The screw is rotatably mounted on the base and is threadedly connected to the gland. The turntable is connected to the screw.

[0012] In one embodiment, the support frame and the connecting plate are integrally formed.

[0013] The beneficial effect of the pre-stressing clamp provided in the present application is that: a support groove is provided on the support frame of the pre-stressing component, and an elastic member provides elastic force for the support frame to approach the pressure cover, which is beneficial for the support groove of the support frame and the cover groove of the pressure cover to pre-clamp the workpiece through the elastic force provided by the elastic member before the base and the pressure cover clamp the workpiece, until the cover groove of the pressure cover and the limit groove of the base jointly clamp the workpiece, thereby avoiding the shaking of the workpieces that are not clamped by the pressure cover and the base during the process of clamping multiple workpieces, thereby improving the fixing accuracy of each workpiece, so as to achieve the purpose of reducing processing damage to the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of the pre-pressing fixture shown in the present invention;

[0015] Figure 2 for Figure 1 A schematic cross-sectional view of the pre-pressing fixture shown;

[0016] Figure 3 for Figure 2 A schematic structural diagram of the seat body of the pre-pressing fixture shown;

[0017] Figure 4 for Figure 2 The schematic diagram of the structure of the connection between the support frame and the connecting plate of the pre-pressing fixture is shown.

[0018] The meanings of the numbers in the accompanying drawings are:

[0019] 100. Pre-pressing fixture;

[0020] 10. Base; 11. Base body; 111. Limiting groove; 112. Slide groove; 113. Inner cavity; 12. Bottom plate; 121. Plate body; 122. Mounting column; 13. Guide column;

[0021] 20. Gland; 21. Cover groove;

[0022] 30. Actuator; 31. Screw; 32. Rotary disc;

[0023] 40. Pre-pressing assembly; 41. Support frame; 411. Support groove; 42. Connecting plate; 43. Elastic member;

[0024] 200. Workpiece. DETAILED DESCRIPTION

[0025] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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 should not be understood as a limitation to the present invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0028] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0029] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0031] like Figure 1 As shown, it is a pre-pressing fixture 100 shown in the present invention, which is used to fix a workpiece 200.

[0032] like Figures 1 to 2As shown, the pre-pressing fixture 100 includes: a base 10, a pressure cover 20, an actuator 30 and a pre-pressing assembly 40, wherein the base 10 is used to cooperate with the pressure cover 20 to clamp the workpiece 200, the actuator 30 is used to drive the pressure cover 20 to move closer to or away from the base 10, so as to control the base 10 and the pressure cover 20 to clamp or release the workpiece 200, and the pre-pressing assembly 40 is installed on the base 10, and is used to cooperate with the pressure cover 20 to clamp the workpiece 200 before the base 10 and the pressure cover 20 clamp the workpiece 200. The workpiece 200 is clamped by the pressure cover 20 and the base 10 together, and the pre-pressing component 40 is pre-coordinated with the pressure cover 20 to clamp the workpiece 200, until the pressure cover 20 and the base 10 jointly clamp the workpiece 200. This method is beneficial to effectively reduce the shaking of some workpieces 200 during the process of clamping multiple workpieces 200 by the pressure cover 20 and the base 10, thereby improving the fixing accuracy of the pre-pressing fixture 100 on each workpiece 200, so as to achieve the purpose of reducing processing damage to the workpiece 200.

[0033] Below, combined Figures 1 to 4 , the above-mentioned pre-pressing fixture 100 is further explained.

[0034] like Figures 1 to 3 As shown, the base 10 includes a base body 11, a bottom plate 12 and a guide column 13. The base body 11 is provided with a limiting groove 111, a slide groove 112 and an inner cavity 113. The number of the limiting grooves 111 is multiple, and the number of slide grooves 112 corresponds to the number of the limiting grooves 111 and is connected one by one. The inner cavity 113 is connected to each slide groove 112. The bottom plate 12 is connected to the base body 11 and closes the inner cavity 113. The guide column 13 is connected to the base body 11, and the pressure cover 20 is slidably connected to the guide column 13. The limiting groove 111 corresponds to the number of slide grooves 112, and the two slide grooves 112 are spaced apart along the length direction of the limiting groove 111. The bottom plate 12 includes a plate body 121 and an installation column 122. The plate body 121 is connected to the base body 11, and the installation column 122 is arranged in the inner cavity 113. The number of the guide columns 13 is four, and the four guide columns 13 are arranged along the edge of the base body 11.

[0035] like Figures 1 to 2 As shown, the pressure cover 20 is slidably connected to the guide column 13 of the base 10, and is provided with cover grooves 21 having the same number as the limiting grooves 111. The positions of the cover grooves 21 and the limiting grooves 111 are correspondingly arranged for cooperating with the limiting grooves 111 to clamp the workpiece 200.

[0036] like Figures 1 to 2 As shown, the actuator 30 includes a screw 31 and a turntable 32. The screw 31 is rotatably mounted on the base body 11 of the base 10 and is threadedly connected to the pressure cover 20. The turntable 32 is connected to the screw 31. When in use, the turntable 32 is rotated to control the rotation of the screw 31, thereby driving the pressure cover 20 to move closer to or away from the base 10 along the guide column 13.

[0037] like Figure 2 and Figure 4 As shown, the pre-pressing assembly 40 includes a support frame 41, a connecting plate 42 and an elastic member 43. The number of the support frames 41 is the same as the slide groove 112. Each support frame 41 is slidably connected to each slide groove 112. Each support frame 41 is provided with a support groove 411. The support groove 411 is used to support the workpiece 200. The support frame 41 and the connecting plate 42 are integrally formed. The connecting plate 42 and the elastic member 43 are both arranged in the inner cavity 113, wherein the connecting plate 42 is slidably arranged in the inner cavity 113 and is connected to each support frame 41. The elastic member 43 is a spring, and is socketed with the mounting column 122 and abuts against the connecting plate 42 to provide elastic force for the support frame 41 to approach the pressure cover 20.

[0038] When the pre-pressing fixture 100 provided in the present application is in use: each workpiece 200 is placed on the support groove 411 of each support frame 41 respectively, and the turntable 32 is rotated to control the rotation of the screw 31, so that the screw 31 drives the pressure cover 20 along the guide column 13 of the base 10 to approach the seat body 11. During this process, the cover groove 21 of the pressure cover 20 first clamps the workpiece 200 together through the support groove 411 of the support frame 41, and squeezes the support frame 41 through the workpiece 200. The support frame 41 squeezes the elastic part 43 through the connecting plate 42, so that the support frame 41 slides along the slide groove 112 until all the workpieces 200 are in contact with the limit groove 111, so as to clamp and fix the workpiece 200.

[0039] The beneficial effect of the pre-stressing fixture 100 provided in the present application is that: a support groove 411 is provided on the support frame 41 of the pre-stressing component 40, and the elastic member 43 provides an elastic force for the support frame 41 to approach the pressure cover 20, which is beneficial before the base 10 and the pressure cover 20 clamp the workpiece 200. The elastic force provided by the elastic member 43 enables the support groove 411 of the support frame 41 and the cover groove 21 of the pressure cover 20 to pre-clamp the workpiece 200 until the cover groove 21 of the pressure cover 20 and the limiting groove 111 of the base 10 jointly clamp the workpiece 200, thereby avoiding the shaking of the workpiece 200 that is not clamped by the pressure cover 20 and the base 10 during the process of clamping multiple workpieces 200, thereby improving the fixing accuracy of each workpiece 200, so as to achieve the purpose of reducing processing damage to the workpiece 200.

[0040] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A pre-pressing fixture, characterized in that: include: The cam is connected to the base through a sliding groove and a plurality of sliding grooves, and the number of the sliding grooves corresponds to the number of the limiting grooves and is connected one by one. The cam is slidably connected to the base and is provided with a cover groove having the same number as the limiting grooves. The position of each cover groove corresponds to the position of each limiting groove. The actuating member is used to drive the cam to approach or move away from the base. The pre-pressing assembly includes a support frame, a connecting plate and an elastic member. The number of the support frames is the same as the sliding groove. Each support frame is slidably connected to each sliding groove. Each support frame is provided with a support groove. The connecting plate is slidably set in the base and connected to each support frame. The elastic member is used to provide the elastic force for the support frame to approach the pressure cover.

2. The pre-pressing fixture according to claim 1, characterized in that: The base includes a base body and a bottom plate. The base body is provided with the limiting groove, the sliding groove and the inner cavity. The bottom plate is connected to the base body and closes the inner cavity. The connecting plate and the elastic member are both arranged in the inner cavity.

3. The pre-pressing fixture according to claim 2, characterized in that: The bottom plate includes a plate body and a mounting post. The plate body is connected to the base body. The mounting post is sleeved with the elastic member. The elastic member is supported by the connecting plate.

4. The pre-pressing fixture according to claim 2, characterized in that: The base further comprises a guide post connected to the base body, and the pressure cover is slidably connected to the guide post.

5. The pre-pressing fixture according to claim 4, characterized in that: The number of the guide posts is four, and the four guide posts are arranged along the edge of the base.

6. The pre-pressing fixture according to claim 1, characterized in that: The number of the limiting grooves corresponding to the sliding grooves is two, and the two sliding grooves are spaced apart along the length direction of the limiting groove.

7. The pre-pressing fixture according to claim 1, characterized in that: There are two elastic members, and the two elastic members are spaced apart.

8. The pre-pressing fixture according to claim 1, characterized in that: The actuating member includes a screw and a turntable. The screw is rotatably mounted on the base and is threadedly connected to the gland. The turntable is connected to the screw.

9. The pre-pressing fixture according to claim 1, characterized in that: The support frame and the connecting plate are integrally formed.

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