Anti-falling positioning clamp

Abstract

The utility model relates to an anti-falling positioning clamp which comprises a base, a fixing plate, an adaptive ring and a pressing assembly, and a machining hole is formed in a vertical plate of the base. The fixing plate is installed on the front side of the vertical plate, and a positioning hole concentric with the machining hole is formed in the vertical plate. The adaptive ring is mounted on the front side of the fixing plate and is concentric with the positioning hole; the pressing assembly comprises a plurality of pressing plates which are annularly arranged on the periphery of the adaptive ring and can press and cover the front side of the adaptive ring, kidney-shaped holes located in the radial direction of the adaptive ring are formed in the pressing plates, and bolts and limiting supporting columns which are fixed to the fixing plate are assembled in the kidney-shaped holes. The problem that the pressing plate deflects can be avoided, and the fixing effect and the machining quality of the output shaft are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to output shaft processing equipment field, concretely relates to a kind of anti-drop positioning fixture. BACKGROUND

[0002] When milling and processing the inner hole and thread hole of output shaft, the output shaft needs to be placed on the positioning fixture, and the output shaft is pressed tightly by the pressing plate on the positioning fixture to fix it, so as to avoid the movement of the output shaft during processing to ensure the processing quality.

[0003] The pressing plate on the positioning fixture needs to be moved in the radial direction and axial direction of the output shaft, that is, after the output shaft is placed on the fixture, the pressing plate needs to be moved inward in the radial direction of the output shaft first, so that the pressing plate is opposite to the output shaft, and then the pressing plate is moved in the axial direction of the output shaft towards the side where the output shaft is located, so that the pressing plate is pressed tightly on the surface of the output shaft, realizing the fixation of the output shaft. When moving the pressing plate in the radial direction of the output shaft, the pressing plate needs to be guided and limited.

[0004] The existing positioning fixture generally sets a guide groove in the radial direction of the output shaft on the side of the pressing plate towards the output shaft, and a guide limiting pillar is matched and set in the guide groove, but due to the limited depth of the guide groove, this structure is prone to the situation that the guide limiting pillar comes out of the guide groove, which in turn causes the position deviation of the pressing plate, directly affecting the fixation effect of the output shaft and the processing quality. SUMMARY

[0005] The utility model aims to provide an anti-drop positioning fixture to solve the problem of position deviation of the pressing plate.

[0006] The anti-drop positioning fixture of the utility model is realized as follows:

[0007] An anti-drop positioning fixture, comprising

[0008] a base, a vertical plate of which is provided with a processing hole;

[0009] a fixed plate, which is installed on the front side of the vertical plate, and the vertical plate is provided with a positioning hole concentric with the processing hole;

[0010] an adapter ring, which is installed on the front side of the fixed plate and arranged concentrically with the positioning hole;

[0011] a pressing assembly, which is provided with multiple groups and arranged in a ring shape around the adapter ring, the pressing assembly comprising a pressing plate, the pressing plate being provided with a waist-shaped hole in the radial direction of the adapter ring, and the waist-shaped hole being fitted with a positioning screw and a limiting pillar fixed on the fixed plate.

[0012] Further, a locking nut is arranged on the positioning screw and covers the front side of the pressing plate.

[0013] Further, a spring is arranged on the positioning screw and between the pressing plate and the fixing plate.

[0014] Further, a limiting step with an outer diameter larger than the width of the waist-shaped hole is arranged on the limiting pillar.

[0015] Further, a gasket is arranged at the front end of the pressing surface of the pressing plate.

[0016] Further, the fixing plate is fixed on the vertical plate by supporting bolts.

[0017] Pin holes are arranged on the vertical plate and the fixing plate, and a plug pin is arranged in the pin holes.

[0018] Further, the adapter ring is arranged on the fixing plate by fixing bolts.

[0019] At least one cylindrical positioning pin and at least one rhombic positioning pin are arranged on the front wall of the fixing plate, and positioning pin holes are arranged on the adapter ring to cooperate with the cylindrical positioning pin and the rhombic positioning pin.

[0020] Further, a slide groove is arranged on the front wall of the fixing plate in the radial direction, and a Y-shaped positioning plate with a rear end capable of extending into the positioning hole is arranged in the slide groove.

[0021] Further, a locking plate is arranged in the slide groove in front of the Y-shaped positioning plate, and a locking bolt I is arranged on the locking plate.

[0022] A locking bolt II is arranged on the lower end of the Y-shaped positioning plate.

[0023] Further, a horizontal cutting edge is arranged on the top of the fixing plate, and a lifting ring is arranged on the horizontal cutting edge.

[0024] After the above technical scheme is adopted, the present application has the following beneficial effects.

[0025] The limiting pillar is assembled in the waist-shaped hole on the pressing plate, which can guide and limit the movement of the pressing plate in the radial direction of the output shaft, prevent the limiting pillar from being pulled out of the waist-shaped hole, avoid the problem of the deflection of the pressing plate, and ensure the fixing effect of the output shaft and the processing quality. BRIEF DESCRIPTION OF DRAWINGS

[0026] The present application will be further described below in combination with the drawings and examples.

[0027] Figure 1is the structure diagram of the first visual angle of the anti-dropping positioning clamp of the preferred embodiment of the utility model;

[0028] Figure 2 is the structure diagram of the second visual angle of the anti-dropping positioning clamp of the preferred embodiment of the utility model;

[0029] Figure 3 is the structure diagram of the base of the anti-dropping positioning clamp of the preferred embodiment of the utility model;

[0030] Figure 4 is the structure diagram of the fixed plate of the anti-dropping positioning clamp of the preferred embodiment of the utility model;

[0031] Figure 5 is the structure diagram of the adaptive ring of the anti-dropping positioning clamp of the preferred embodiment of the utility model;

[0032] Figure 6 is the exploded view of the compression assembly of the anti-dropping positioning clamp of the preferred embodiment of the utility model;

[0033] Figure 7 is the positioning state diagram of the first visual angle of the anti-dropping positioning clamp of the preferred embodiment of the utility model;

[0034] Figure 8 is the positioning state diagram of the second visual angle of the anti-dropping positioning clamp of the preferred embodiment of the utility model;

[0035] In the drawing: base 1, vertical plate 1-1, bottom plate 1-2, reinforcing plate 1-3, fixed plate 2, adaptive ring 3, machining hole 4, positioning hole 5, pressing plate 6, waist-shaped hole 7, positioning screw 8, limiting support 9, locking nut 10, fixed nut 11, spring 12, limiting step 13, pad 14, assembly groove 15, supporting bolt 16, plug-in pin 17, rear pin hole 18, front pin hole 19, fixed bolt 20, cylindrical positioning pin 21, rhombus positioning pin 22, positioning pin hole 23, sliding groove 24, Y-shaped positioning plate 25, locking plate 26, locking hole I 27, horizontal cutting edge 28, hoisting ring 29, locking bolt I 30, bolt assembly hole 31, limiting support mounting hole 32, locking bolt II 33, locking hole II 34, output shaft 35. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0037] The following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the application.

[0038] As shown in the drawings, Figures 1-8 A anti-loose positioning clamp, comprising a base 1, a fixed plate 2, an adapter ring 3 and a compression assembly, the vertical plate 1-1 of the base 1 is provided with a machining hole 4; the fixed plate 2 is installed on the front side of the vertical plate 1-1, and the vertical plate 1-1 is provided with a positioning hole 5 concentric with the machining hole 4; the adapter ring 3 is installed on the front side of the fixed plate 2 and arranged concentrically with the positioning hole 5; the compression assembly is provided with multiple groups and is annularly distributed on the periphery of the adapter ring 3, and the compression assembly comprises a pressing plate 6, the pressing plate 6 is provided with a waist-shaped hole 7 located in the radial direction of the adapter ring 3, and the waist-shaped hole 7 is fitted with a positioning screw 8 and a limiting support 9 fixed on the fixed plate 2.

[0039] Among them, the base 1 is an inverted T-shaped structure, which comprises a bottom plate 1-2 and a vertical plate 1-1 vertically arranged on the bottom plate 1-2, and the rear side of the vertical plate 1-1 is provided with a reinforcing plate 1-3 connected with the bottom plate 1-2 to ensure the strength of the base 1. The fixed plate 2 and the adapter ring 3 are installed in turn on the front side of the vertical plate 1-1, and the output shaft 35 to be processed is fixed in the adapter ring 3, and the pressing plate 6 is pressed on the front side of the output shaft 35 to realize the fixation of the output shaft 35. The setting of the waist-shaped hole 7 can move the pressing plate 6 outward along the direction of the waist-shaped hole 7 before placing the output shaft 35, so as to avoid the influence of the pressing plate 6 on the placement of the output shaft 35.

[0040] The adapter ring 3 cooperates with the corresponding output shaft 35, that is, the corresponding adapter ring 3 can be selected according to the specifications of the output shaft 35.

[0041] In this embodiment, four pressing plates 6 are provided and uniformly distributed on the periphery of the adapter ring 3.

[0042] In order to be able to press the pressing plate 6 on the output shaft 35, the positioning screw 8 is provided with a locking nut 10 which covers the front side of the pressing plate 6.

[0043] After the output shaft 35 is placed in place, the locking nut 10 is tightened, which can push the pressing plate 6 to move towards the direction of the output shaft 35 until it is pressed on the front wall of the output shaft 35 to fix it firmly.

[0044] In the embodiment, the fixing plate 2 is provided with bolt assembly holes 31 corresponding to the positioning screws 8, the front wall of the fixing plate 2 at the bolt assembly holes 31 is provided with fixing nuts 11, the positioning screws 8 are assembled on the fixing nuts 11 and the rear ends of the positioning screws 8 extend into the corresponding bolt assembly holes 31, so as to ensure the firmness of the installation of the positioning screws 8.

[0045] After the output shaft 35 is processed, the locking nuts 10 are loosened to loosen the output shaft 35, in order to reset the pressing plate 6 (i.e. move towards the direction away from the output shaft 35), the positioning screws 8 are sleeved with springs 12 and the springs 12 are located between the pressing plate 6 and the fixing plate 2.

[0046] When the pressing plate 6 presses the output shaft 35, in order to limit the output shaft 35, avoid the abrasion or deformation of the output shaft 35 caused by excessive pressure, the limiting support 9 is provided with a limiting step 13 with an outer diameter larger than the width of the waist-shaped hole 7.

[0047] The outer diameter of the part of the limiting support 9 corresponding to the limiting step 13 is larger than the outer diameter of the front end of the limiting support 9, i.e. the part assembled in the waist-shaped hole 7, when the pressing plate 6 presses the output shaft 35 to the limiting step 13, the limiting step 13 will block the further movement of the pressing plate 6, thereby playing a limiting role on the pressing plate 6.

[0048] Specifically, the front wall of the fixing plate 2 is provided with a limiting support mounting hole 32 for assembling the limiting support 9, and the rear end of the limiting support 9 is mounted in the limiting support mounting hole 32.

[0049] The pressing plate 6 is generally made of medium carbon steel material, which has high hardness, and in order to avoid the abrasion of the outer surface of the output shaft 35 caused by the pressing plate 6, the pressing plate 6 is provided with a pad 14 at the front end of the pressing surface.

[0050] The pressing surface of the pressing plate 6 is the side surface thereof facing the fixing plate 2, and the front end thereof is close to one end of the center of the adapter ring 3, specifically, the pressing surface of the pressing plate 6 is provided with an assembly groove 15, and the pad 14 is fixed in the assembly groove 15 through screws, and when the output shaft 35 is fixed, the pressing plate 6 is pressed on the front wall of the output shaft 35 through the pad 14.

[0051] Preferably, the pad 14 is made of brass material.

[0052] In order to realize the installation of the fixing plate 2, the fixing plate 2 is fixed on the vertical plate 1-1 through supporting bolts 16.

[0053] In order to realize the positioning of the fixing plate 2, the vertical plate 1-1 and the fixing plate 2 are provided with corresponding pin holes, and the pin holes are installed with plug-in pins 17.

[0054] The rear pin hole 18 is arranged on the vertical plate 1-1, and the front pin hole 19 is arranged on the fixed plate 2. When the fixed plate 2 is assembled on the vertical plate 1-1, the plug-in pin 17 is first assembled in the corresponding front pin hole 19 and rear pin hole 18 to position the fixed plate 2, and then the support bolt 16 is used to install the fixed plate 2 on the vertical plate 1-1.

[0055] In order to realize the installation of the adapter ring 3, the adapter ring 3 is installed on the fixed plate 2 through the fixing bolt 20.

[0056] In order to position the adapter ring 3, at least one cylindrical positioning pin 21 and at least one rhombic positioning pin 22 are arranged on the front wall of the fixed plate 2, and the adapter ring 3 is provided with a positioning pin hole 23 matched with the cylindrical positioning pin 21 and the rhombic positioning pin 22.

[0057] Specifically, one cylindrical positioning pin 21 and one rhombic positioning pin 22 are arranged on the front wall of the fixed plate 2, and the two positioning pins are located on the same straight line of the diameter of the processing hole 4, and the adapter ring 3 is provided with a positioning pin hole 23 matched with the two positioning pins. When the adapter ring 3 is installed, the two positioning pins are first matched with the corresponding positioning pin hole 23, and then the adapter ring 3 is connected with the fixed plate 2 through the fixing bolt 20.

[0058] In order to position the output shaft 35 axially, a sliding groove 24 is arranged on the front wall of the fixed plate 2 in the radial direction, and a Y-shaped positioning plate 25 with the inner end capable of extending into the positioning hole 5 is installed in the sliding groove 24.

[0059] In this embodiment, the sliding groove 24 is located at the bottom of the fixed plate 2, and the Y-shaped positioning plate 25 can move in the radial direction of the positioning hole 5 in the sliding groove 24, so that the inner end, i.e. the upper end of the Y-shaped positioning plate 25, extends into the positioning hole 5 and matches with the output shaft 35.

[0060] When the output shaft 35 is placed on the positioning clamp, the columnar part thereof faces backward, and the top of the Y-shaped positioning plate 25 supports and is positioned between the two columnar parts, so as to realize the positioning and support of the output shaft 35.

[0061] In order to fix the position of the Y-shaped positioning plate 25, a locking plate 26 located in front of the Y-shaped positioning plate 25 is installed in the sliding groove 24, and the locking plate 26 is provided with a locking hole I 27 and a locking bolt I 30.

[0062] Specifically, the sliding groove 24 is a "convex" type groove with a wide front and a narrow back, the Y-shaped positioning plate 25 is assembled in the part with a relatively narrow width, and the locking plate 26 is located in the wider part of the sliding groove 24 and in front of the Y-shaped positioning plate 25. The locking plate 26 is provided with a locking hole I 27, and the locking bolt I 30 is assembled in the corresponding locking hole I 27.

[0063] Preferably, in order to ensure the fixing effect of the Y-shaped positioning plate 25, a locking bolt II 33 is installed at the lower end of the Y-shaped positioning plate 25.

[0064] Specifically, the lower end of the Y-shaped positioning plate 25 is provided with a locking hole II 34, and the locking bolt II 33 is installed in the locking hole II 34.

[0065] When fixing the position of the Y-shaped positioning plate 25, the locking bolt I 30 is tightened, and the end thereof is abutted against the groove bottom of the wide diameter part of the sliding groove 24. Then, the Y-shaped positioning plate 25 is limited in the narrow diameter part of the sliding groove 24 by the locking plate 26. Then, the locking bolt II 33 is tightened, and the end thereof is abutted against the groove bottom of the narrow diameter part of the sliding groove 24. Then, the position of the Y-shaped positioning plate 25 is fixed by the locking bolt II 33.

[0066] Correspondingly, the locking bolt II 33 is loosened, and the Y-shaped positioning plate 25 is released. Then, the Y-shaped positioning plate 25 can be moved along the sliding groove 24.

[0067] The locking bolt II 33 not only has the function of locking the Y-shaped positioning plate 25, but also can move the Y-shaped positioning plate 25 upward by the locking bolt II 33 when the locking bolt II 33 is loosened.

[0068] In order to facilitate the movement of the entire positioning clamp, the top of the fixed plate 2 is provided with a horizontal cut edge 28, and a lifting ring 29 is installed on the horizontal cut edge 28.

[0069] When the inner hole and the threaded hole of the output shaft 35 are machined, the locking nut 10 on the positioning screw 8 is loosened first, so that the pressing plate 6 does not exert any force on the spring 12. Then, the pressing plate 6 is moved outward along the waist-shaped hole 7. Then, the output shaft 35 is placed on the adapter ring 3. After the output shaft 35 is placed in place, the Y-shaped positioning plate 25 is pushed upward by the locking bolt II 33, and the output shaft 35 is fixed in place in the circumferential direction. Then, the pressing plate 6 is moved inward along the waist-shaped hole 7. Then, the locking nut 10 is tightened, and the pressing plate 6 is pressed against the front wall of the output shaft 35 by the locking nut 10. Thus, the output shaft 35 is fixed, and the machining operation of the output shaft 35 can be performed.

[0070] Based on the above ideal embodiments of the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined according to the scope of the claims.

Claims

1. A retention preventing positioning clamp characterized by, The utility model relates to a base (1), the vertical plate (1-1) of which is provided with a processing hole (4), a fixed plate (2) which is installed on the front side of the vertical plate (1-1) and is provided with a positioning hole (5) concentric with the processing hole (4) on the vertical plate (1-1), an adapter ring (3) which is installed on the front side of the fixed plate (2) and is arranged concentrically with the positioning hole (5), a compression assembly which is provided with multiple groups and is annularly distributed on the periphery of the adapter ring (3) and comprises a pressing plate (6) provided with a waist-shaped hole (7) located radially of the adapter ring (3), a positioning screw (8) and a limiting support (9) which are fitted in the waist-shaped hole (7) and are fixed on the fixed plate (2). A locking nut (10) is installed on the positioning screw (8) and covers the front side of the pressing plate (6). A spring (12) is sleeved on the positioning screw (8) and is located between the pressing plate (6) and the fixed plate (2). The limiting support (9) is provided with a limiting step (13) with an outer diameter greater than the width of the waist-shaped hole (7). A backing plate (14) is provided at the front end of the covering surface of the pressing plate (6).

2. The anti-backout positioning clamp of claim 1, wherein, The fixed plate (2) is fixed on the vertical plate (1-1) by a support bolt (16).

3. The anti-backout positioning clamp of claim 1, wherein, Pin holes are provided on the vertical plate (1-1) and the fixed plate (2) and a plug-in pin (17) is installed in the pin holes.

4. The anti-backout positioning clamp of claim 1, wherein, The adapter ring (3) is installed on the fixed plate (2) by a fixing bolt (20).

5. The anti-backout positioning clamp of claim 1, wherein, At least one cylindrical positioning pin (21) and at least one rhombic positioning pin (22) are provided on the front wall of the fixed plate (2) and the adapter ring (3) is provided with positioning pin holes (23) matched with the cylindrical positioning pin (21) and the rhombic positioning pin (22).

6. The anti-backout positioning clamp of claim 1, wherein, A sliding groove (24) is provided on the front wall of the fixed plate (2) and a Y-shaped positioning plate (25) is installed in the sliding groove (24) and can extend into the positioning hole (5). A locking plate (26) is installed in the sliding groove (24) and located in front of the Y-shaped positioning plate (25) and is provided with a locking bolt I (30).

7. The anti-backout positioning clamp of claim 1, wherein, A locking bolt II (33) is installed at the lower end of the Y-shaped positioning plate (25). A horizontal cutting edge (28) is provided on the top of the fixed plate (2) and a lifting ring (29) is installed on the horizontal cutting edge (28).

8. The anti-backout positioning clamp of claim 1, wherein, ​ 9. The anti-backout positioning clamp of claim 8, wherein, ​ ​ 10. The anti-backout positioning clamp of claim 1, wherein, ​

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