A kind of quick fixture for disc-like parts

Abstract

The present invention discloses a quick fixture for disc-like parts, which includes a base and a pressing mechanism. The base is in the shape of a two-stage step, including a first step portion and a second step portion arranged on the first step portion. One side of the second step portion close to the first step portion is a concave V-shaped surface, and the V-shaped surface and the top surface of the first step portion form a mounting groove for placing a valve. The pressing mechanism includes a sliding column arranged on the top surface of the second step portion and a pressing plate mounted on the sliding column. The pressing plate includes a mounting portion and a pressing portion. The mounting portion is provided with a guide hole and is sleeved on the sliding column. The pressing portion extends towards the mounting groove side, and a plurality of bolt holes are arranged side by side on the pressing portion. One of the bolt holes is used to accommodate a pressing screw to press the valve. The quick fixture for disc-like parts of the present invention can quickly position and clamp disc-like parts with different sizes and thicknesses.

Description

Technical Field

[0001] The present invention relates to the field of jigs, and particularly to a quick jig for disc-like parts. Background Art

[0002] An engine valve has a disc portion and a rod portion. The disc portion of the valve is disc-shaped. However, when machining such disc-like parts, a special jig is required for clamping, and the installation process of the jig is relatively complex. When machining valves of different sizes, different jigs need to be switched, increasing costs. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a quick jig for disc-like parts, which can quickly position and clamp disc-like parts of different sizes and thicknesses.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0005] A quick jig for disc-like parts, comprising:

[0006] A base, which is in the shape of a two-level step, including a first step portion and a second step portion provided on the first step portion. One side of the second step portion close to the first step portion is a concave V-shaped surface, and the V-shaped surface and the top surface of the first step portion form an installation groove for placing the valve.

[0007] A pressing mechanism, including a sliding column provided on the top surface of the second step portion and a pressing plate mounted on the sliding column. The pressing plate includes a mounting portion and a pressing portion. The mounting portion is provided with a guiding hole and is sleeved on the sliding column. The pressing portion extends towards the installation groove side, and a plurality of bolt holes are arranged side by side on the pressing portion. One of the bolt holes is used to accommodate a pressing screw to press the valve.

[0008] A quick clamp for a disc-like component according to an embodiment of the present invention has at least the following beneficial effects: when clamping is required, lift the pressure plate, put the valve into the mounting groove and close to the V-shaped surface, then screw the clamping screw into the appropriate bolt hole and press the pressure plate down, so that the screwed-down clamping screw can clamp the valve disc. During the tightening process, in the height direction, the clamping part is subjected to the upward force R1 of the clamping screw, and the mounting part is subjected to the downward friction force R2 of the sliding column. At the same time, the left side of the pressure plate is tilted upward and the right side is dropped. The lower part of the guide hole of the mounting part is subjected to the rightward force N1, and the upper part is subjected to the leftward force N2. When the clamping screw can no longer be rotated, the pressure plate is subjected to two equal and opposite force moments and is balanced. m(N1, N2) is a positive force couple, and m(R1, R2) is a negative force couple. The pressure plate is subjected to the balanced force couple system and is stationary, and the valve pressed thereunder will also be stationary and clamped. Loose valve process: rotate the clamping screw upward a little, the balanced force couple of the pressure plate is destroyed, and the pressure plate can be lifted manually to take out the valve. Therefore, this fixture can adapt to disc parts of different sizes and thicknesses, and can quickly position and clamp.

[0009] According to some embodiments of the present invention, two sliding columns are provided, and the mounting portion is provided with two guide holes, and the two guide holes are mounted in cooperation with the two sliding columns.

[0010] Advantageously, the two guide holes and the two slide posts are installed in coordination so that the pressure plate will not rotate in other directions, which is conducive to stable clamping.

[0011] According to some embodiments of the present invention, the pressing plate is L-shaped, the mounting portion is a short side of the pressing plate, and the pressing portion is a long side of the pressing plate.

[0012] Advantageously, the L-shaped pressing plate can reduce the weight of the pressing plate on the one hand, and can avoid air in the stem of the valve on the other hand, thereby reducing the impact on processing.

[0013] According to some embodiments of the present invention, the mounting portion is higher than a top surface of the pressing portion.

[0014] Advantageously, such an arrangement can increase the thickness of the mounting portion, which is beneficial for the guide hole and the sliding column to cooperate and bear force.

[0015] According to some embodiments of the present invention, a void avoidance groove is provided on the installation groove.

[0016] Advantageously, the provision of the air avoidance groove is conducive to further processing of the valve, such as cutting, without damaging the base during processing.

[0017] According to some embodiments of the present invention, the air avoidance groove passes through the first step portion and extends to the middle of the V-shaped surface.

[0018] Advantageously, such a setting is conducive to operations such as wire cutting of the valve, and the valve can be cut in half for inspection.

[0019] According to some embodiments of the present invention, the first stepped portion and the second stepped portion are integrally formed.

[0020] Advantageously, integral forming can ensure the strength of the base and facilitate the installation of the fixture at the same time.

[0021] According to some embodiments of the present invention, two mounting holes are provided on one side of the base away from the mounting groove.

[0022] Advantageously, the provision of the mounting holes is conducive to mounting the base on a mounting position such as a workbench.

[0023] According to some embodiments of the present invention, a stepped notch is provided on the bottom surface of the base.

[0024] Advantageously, the provision of the stepped notch is conducive to the positioning and installation of the base, ensuring accurate installation position and not being easily displaced.

[0025] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become apparent from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0027] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0028] Figure 2 is Figure 1 the front view of

[0029] Figure 3 is Figure 1 the top view of

[0030] Figure 4 is Figure 2 a schematic diagram of clamping the valve;

[0031] Figure 5 is Figure 4 the force analysis diagram of

[0032] Reference numerals: base 100, first stepped portion 110, second stepped portion 120, V-shaped surface 130, mounting groove 140, sliding column 150, pressing plate 160, mounting portion 170, pressing portion 180, guide hole 190, bolt hole 200, pressing screw 210, clearance groove 220, mounting hole 230, stepped notch 240, valve 250. Detailed implementation manners

[0033] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0034] In the description of the present invention, it should be understood that with regard to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0035] In the description of the present invention, the meaning of "a number of" is one or more, the meaning of "a plurality of" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0037] Next, refer to Figures 1 - 5 A kind of quick fixture for disc-like parts will be described in detail with a specific embodiment. It should be understood that the following description is only an exemplary illustration and not a specific limitation of the invention.

[0038] As Figures 1 - 3 shown, a kind of quick fixture for disc-like parts includes a base 100 and a pressing mechanism.

[0039] Among them, the base 100 is in the shape of a two - level step, including a first step portion 110 and a second step portion 120 arranged on the first step portion 110. One side of the second step portion 120 close to the first step portion 110 is a recessed V - shaped surface 130. The V - shaped surface 130 and the top surface of the first step portion 110 form a mounting groove 140 for placing the valve 250. The pressing mechanism includes a sliding column 150 arranged on the top surface of the second step portion 120 and a pressing plate 160 mounted on the sliding column 150. The pressing plate 160 includes a mounting portion 170 and a pressing portion 180. The mounting portion 170 is provided with a guide hole 190 and is sleeved on the sliding column 150. The pressing portion 180 extends towards the side of the mounting groove 140. A plurality of bolt holes 200 are arranged side by side on the pressing portion 180, and one of the bolt holes 200 is used to accommodate a pressing screw 210 to press the valve 250 tightly.

[0040] When clamping is required, as Figure 4 shown, lift the pressing plate 160, place the valve 250 into the mounting groove 140 and make it close to the V - shaped surface 130. Then screw the pressing screw 210 into a suitable bolt hole 200 and press down the pressing plate 160 so that the screwed - down pressing screw 210 can press the disc part of the valve 250. During the screwing - tight process, as Figure 5 shown, in the height direction, the pressing portion 180 receives an upward force R1 from the pressing screw 210, and the mounting portion 170 receives a downward frictional force R2 from the sliding column 150. At the same time, the left side of the pressing plate 160 warps upwards and the right side sags downwards. The lower part of the guide hole 190 of the mounting portion 170 receives a right - ward force N1, and the upper part receives a left - ward force N2. When the pressing screw 210 can no longer be rotated, the pressing plate 160 is balanced by two force couples with equal magnitudes and opposite directions. m(N1, N2) is a positive force couple, and m(R1, R2) is a negative force couple. The pressing plate 160 is static under the action of the balanced force couple system, and the valve 250 pressed by it will also be static and clamped. The process of loosening the valve 250: Rotate the pressing screw 210 upwards a little, the balanced force couple system where the pressing plate 160 is located is destroyed, and directly lift the pressing plate 160 manually, then the valve 250 can be taken out. Therefore, this fixture can adapt to disc - shaped parts of different sizes and thicknesses, and can quickly perform positioning and clamping.

[0041] As Figure 1 shown, there are two sliding columns 150, and the mounting portion 170 is provided with two guide holes 190. The two guide holes 190 are installed in cooperation with the two sliding columns 150. The cooperation of the two guide holes 190 and the two sliding columns 150 makes the pressing plate 160 not rotate in other directions, which is beneficial to stable clamping.

[0042] Specifically, the pressing plate 160 is L - shaped. The mounting portion 170 is the short side of the pressing plate 160, and the pressing portion 180 is the long side of the pressing plate 160. Setting the pressing plate 160 as L - shaped can, on the one hand, reduce the weight of the pressing plate 160, and on the other hand, can avoid the rod part of the valve 250 and reduce the influence on processing.

[0043] In addition, the installation part 170 is higher than the top surface of the pressing part 180. Such a setting can increase the thickness of the installation part 170, which is beneficial to the cooperation and force bearing between the guide hole 190 and the sliding column 150.

[0044] Moreover, an avoidance groove 220 is provided on the installation groove 140. The setting of the avoidance groove 220 is beneficial to the continuous processing of the valve 250, such as cutting, etc., and the base 100 will not be damaged during processing.

[0045] Furthermore, the avoidance groove 220 penetrates through the first step portion 110 and extends to the middle of the V-shaped surface 130. Such a setting is beneficial to operations such as wire cutting of the valve 250, and the valve 250 can be cut in half for inspection.

[0046] It should be noted that the first step portion 110 and the second step portion 120 are integrally formed. Integral forming can ensure the strength of the base 100 and at the same time facilitate the installation of the fixture.

[0047] Such as Figure 1 and Figure 3 As shown, two installation holes 230 are provided on the side of the base 100 away from the installation groove 140. The setting of the installation holes 230 is beneficial to installing the base 100 at an installation position such as a workbench.

[0048] It is worth mentioning that a stepped notch 240 is provided on the bottom surface of the base 100. The setting of the stepped notch 240 is beneficial to the positioning and installation of the base 100, ensuring accurate installation position and not being easily displaced.

[0049] The embodiments of the present invention have been described in detail above with reference to the drawings, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the technical field, various changes can be made without departing from the gist of the present invention.

Claims

1. A kind of quick fixture for disc-shaped parts, characterized in that, Comprising: A base (100), which is in the shape of a two - level step, includes a first step portion (110) and a second step portion (120) provided on the first step portion (110). One side of the second step portion (120) close to the first step portion (110) is a concave V - shaped surface (130). The V - shaped surface (130) and the top surface of the first step portion (110) form a mounting groove (140) for placing a valve (250). An avoidance groove (220) is provided on the mounting groove (140), and the avoidance groove (220) penetrates through the first step portion (110) and extends to the middle of the V - shaped surface (130). A pressing mechanism, which includes a sliding column (150) provided on the top surface of the second step portion (120) and a pressing plate (160) mounted on the sliding column (150). The pressing plate (160) includes a mounting portion (170) and a pressing portion (180). The mounting portion (170) is provided with a guiding hole (190) and is sleeved on the sliding column (150). The pressing portion (180) extends towards the side of the mounting groove (140). A plurality of bolt holes (200) are arranged side by side on the pressing portion (180). One of the bolt holes (200) is used to accommodate a pressing screw (210) to press the valve (250). The pressing plate (160) is L - shaped. The mounting portion (170) is the short side of the pressing plate (160), and the pressing portion (180) is the long side of the pressing plate (160).

2. The quick fixture for a disc-like part according to claim 1, wherein, There are two sliding columns (150), and the mounting portion (170) is provided with two guiding holes (190). The two guiding holes (190) are cooperatively installed with the two sliding columns (150).

3. A kind of quick fixture for disc-like parts according to claim 1, characterized in that, The mounting portion (170) is higher than the top surface of the pressing portion (180).

4. A kind of quick fixture for disc-like parts according to claim 1, characterized in that, The first step portion (110) and the second step portion (120) are integrally formed.

5. A kind of quick fixture for disc-like parts according to claim 1, characterized in that, Two mounting holes (230) are provided on one side of the base (100) away from the mounting groove (140).

6. The quick fixture for a disc-like part according to claim 1, characterized in that, A step notch (240) is provided on the bottom surface of the base (100).

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