Positioning device for traction bearing machining

Abstract

The positioning device comprises a bottom plate, a limiting mechanism arranged on the bottom plate and a pressing mechanism used in cooperation with the limiting mechanism, the limiting mechanism comprises a positioning fluted disc, an outer circle supporting plate and an auxiliary top plate, and the bottom of the positioning fluted disc, the bottom of the outer circle supporting plate and the bottom of the auxiliary top plate are all fixed to the bottom plate; the upper surface of the positioning fluted disc is provided with a tooth surface matched with teeth on a tooth surface portion of a traction shaft sleeve, the upper surface of the outer circle supporting plate is in an arc shape matched with the side face of the shaft sleeve outer circle portion of the traction shaft sleeve, and the auxiliary top plate is located on one side of the outer circle supporting plate and used for supporting one bottom face of the shaft sleeve outer circle portion. The pressing mechanism comprises a first pressing plate used for pressing and fixing the tooth surface portion and a second pressing plate used for pressing and fixing the outer circle portion of the shaft sleeve, and the bottom of the first pressing plate and the bottom of the second pressing plate are both installed on the bottom plate. Compared with the prior art, the side face of the traction shaft sleeve cannot be shielded by the limiting mechanism, and reduction of precision and efficiency caused by two times of clamping is avoided.

Description

Technical Field

[0001] The invention relates to a positioning device, in particular to a positioning device used for traction bearing processing. Background Art

[0002] The traction sleeve is an important part of the vehicle and ship, such as Figure 1 As shown, the traction sleeve 1 mainly includes a tooth surface portion 1-2, a sleeve outer circumferential portion 1-1, and a main body connecting the two parts.

[0003] Due to its complex shape, it is difficult for existing positioning devices to expose the surfaces that need to be processed while completing the fixation. For example, the relevant prior art discloses a positioning mechanism for processing traction bearings, which requires two processes to complete the processing. A CNC lathe and a three-jaw chuck are used to complete the drilling and boring of the side. Due to the long hole depth, the tool used is also lengthened accordingly, causing tool vibration and poor finish of the processed surface. Then the posture is adjusted and repositioned, and then a drilling machine is used to complete the drilling of the plane.

[0004] The above-mentioned prior art undoubtedly has high labor and processing costs, and the processing is divided into two times. The workpiece needs to be re-clamped between the two processings, which will lead to tolerance and reduced precision. Summary of the invention

[0005] The purpose of the present invention is to provide a positioning device for traction bearing processing. Through the design of the positioning gear disk and the outer cylindrical support plate, the two main parts of the traction sleeve can be limited and clamped by the first pressure plate and the second pressure plate. Since the limiting part is only on the bottom surface, the side of the traction sleeve will not be blocked by the limiting mechanism, so that the surface to be processed can be exposed, avoiding the decrease in accuracy and efficiency caused by two clamping.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A positioning device for traction bearing processing, comprising a bottom plate and a limiting mechanism arranged on the bottom plate and a clamping mechanism used in conjunction with the limiting mechanism, the limiting mechanism comprising a positioning toothed disc, an outer cylindrical support plate and an auxiliary top plate, the bottoms of the positioning toothed disc, the outer cylindrical support plate and the auxiliary top plate are all fixed to the bottom plate, the upper surface of the positioning toothed disc is provided with a tooth surface that matches the teeth on the tooth surface of the traction shaft sleeve, the upper surface of the outer cylindrical support plate is an arc shape that matches the side surface of the outer cylindrical portion of the traction shaft sleeve, the auxiliary top plate is located on one side of the outer cylindrical support plate and is used to support a bottom surface of the outer cylindrical portion of the shaft sleeve,

[0008] The clamping mechanism comprises a first clamping plate for clamping and fixing the tooth surface portion and a second clamping plate for clamping and fixing the outer circumference portion of the sleeve, and the bottoms of the first clamping plate and the second clamping plate are both mounted on the bottom plate.

[0009] The projection area of ​​the upper surface of the outer circular support plate on the bottom plate and the projection area of ​​the auxiliary top plate on the bottom plate are both axisymmetric figures, and the axes of symmetry of the two are on a straight line.

[0010] The auxiliary top plate and the bottom surface of the outer circumference of the sleeve are connected by fastening bolts.

[0011] There are at least three fastening bolts.

[0012] The outer circular support plate includes a support portion and two support columns arranged below the support portion, the bottom plate is provided with a second through hole and two first through holes for the support columns to pass through, the two support columns of the outer circular support plate are respectively inserted into the two first through holes, and the positioning device also includes a leveling bolt, and the top of the leveling bolt supports the bottom surface of the support portion after passing through the second through hole.

[0013] The second through hole is a screw hole.

[0014] A leveling nut is welded to the top of the bottom plate, and the leveling nut and the axis are in a straight line with the axis of the second through hole.

[0015] The first pressure plate includes a first elastic bracket, a first lower pressure plate, a first spring and a first clamping bolt, the second pressure plate includes a second elastic bracket, a second lower pressure plate, a second spring and a second clamping bolt, a first threaded hole and a second threaded hole on the base plate, one end of the first lower pressure plate is connected to the first elastic bracket, the bottom of the first elastic bracket is fixed to the base plate, the first clamping bolt passes through the first elastic bracket and the first spring in sequence and is screwed into the first threaded hole, one end of the second lower pressure plate is connected to the second elastic bracket, the bottom of the second elastic bracket is fixed to the base plate, the second clamping bolt passes through the second elastic bracket and the second spring in sequence and is screwed into the first threaded hole.

[0016] The first lower pressing plate is semi-annular.

[0017] Connecting plates are arranged at both ends of the bottom plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Through the design of the positioning gear disc and the outer cylindrical support plate, the two main parts of the traction sleeve can be limited and clamped by the first pressure plate and the second pressure plate. Since the limiting part is only on the bottom surface, the side of the traction sleeve will not be blocked by the limiting mechanism, so that the surface to be processed can be exposed, avoiding the decrease in accuracy and efficiency caused by two clamping.

[0020] 2. The projection area of ​​the upper surface of the outer circular support plate on the bottom plate and the projection area of ​​the auxiliary top plate on the bottom plate are both axisymmetric figures, and the symmetry axes of the two are on a straight line, so that eccentric rotation torque can be avoided and stability can be improved.

[0021] 3. The bottom of the outer circle support plate adopts the design of support column, and combined with the leveling bolt, the height of the outer circle of the sleeve can be adjusted, thereby improving convenience and stability.

[0022] 4. The designed first pressing plate and second pressing plate have the advantages of being easy to adjust and occupying a small space.

[0023] 5. The first lower pressing plate is semi-circular, which can achieve a stable pressing effect with less material. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the traction sleeve;

[0025] Figure 2 It is a schematic diagram of the structure when a workpiece is clamped in an embodiment of the present invention;

[0026] Figure 3 is a schematic diagram of another angle when a workpiece is clamped in an embodiment of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the outer circular support plate;

[0028] Figure 5 is a schematic diagram of the structure of the base plate;

[0029] Figure 6 is a structural schematic diagram of the first pressing plate;

[0030] Figure 7 is a structural schematic diagram of the second pressing plate;

[0031] Wherein: 1. traction sleeve, 2. bottom plate, 3. outer cylindrical support plate, 4. auxiliary top plate, 5. fastening bolt, 6. first pressure plate, 7. leveling nut, 8. second pressure plate, 9. leveling bolt, 10. connecting plate, 1-1. outer cylindrical part of sleeve, 1-2. tooth surface part, 2-1. first through hole, 2-2. second through hole, 2-3. first threaded hole, 2-4. first threaded hole, 3-1. supporting part, 3-2. supporting column, 6-1. first elastic bracket, 6-2. first lower pressure plate, 6-3. first spring, 6-4. first clamping bolt, 8-1. second elastic bracket, 8-2. second lower pressure plate, 8-3. second spring, 8-4. second clamping bolt. DETAILED DESCRIPTION

[0032] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0033] A positioning device for traction bearing processing, such as Figure 2 and Figure 3 As shown, it includes a bottom plate 2 and a limiting mechanism arranged on the bottom plate 2 and a clamping mechanism used in conjunction with the limiting mechanism. The limiting mechanism includes a positioning toothed disc 11, an outer cylindrical support plate 3 and an auxiliary top plate 4. The bottoms of the positioning toothed disc 11, the outer cylindrical support plate 3 and the auxiliary top plate 4 are all fixed on the bottom plate 2. The upper surface of the positioning toothed disc 11 is provided with a tooth surface that matches the teeth on the tooth surface portion 1-2 of the traction shaft sleeve 1. The upper surface of the outer cylindrical support plate 3 is an arc shape that matches the side surface of the shaft sleeve outer cylindrical portion 1-1 of the traction shaft sleeve 1. The auxiliary top plate 4 is located on one side of the outer cylindrical support plate 3 and is used to support a bottom surface of the shaft sleeve outer cylindrical portion 1-1.

[0034] The clamping mechanism includes a first clamping plate 6 for clamping and fixing the tooth surface portion 1 - 2 and a second clamping plate for clamping and fixing the outer circumferential portion 1 - 1 of the sleeve. The bottoms of the first clamping plate 6 and the second clamping plate 8 are both mounted on the base plate 2 .

[0035] Through the design of the positioning toothed disc 11 and the outer cylindrical support plate 3, the two main parts of the traction sleeve 1 can be limited and clamped by the first pressure plate 6 and the second pressure plate 8. Since the limited part is only on the bottom surface, the side of the traction sleeve 1 will not be blocked by the limiting mechanism, so that the surface to be processed can be exposed, avoiding the decrease in accuracy and efficiency caused by two clamping.

[0036] In most embodiments, Figure 4 As shown, the projection area of ​​the upper surface of the outer circular support plate 3 on the base plate 2 and the projection area of ​​the auxiliary top plate 4 on the base plate 2 are both axially symmetrical figures, and the symmetry axes of the two are on a straight line. In this way, eccentric rotation torque can be avoided and stability can be improved.

[0037] In most embodiments, the auxiliary top plate 4 and the bottom surface of the outer circumference 1-1 of the sleeve are connected by fastening bolts 5, so as to improve the stability of the limit. The specific number of fastening bolts 5 can be selected according to the size of the traction sleeve 1, but there should be at least 3, so as to prevent rotation and flipping.

[0038] In most embodiments, the outer circular support plate 3 includes a support portion 3-1 and two support columns 3-2 disposed below the support portion 3-1. Figure 5As shown, the bottom plate 2 is provided with a second through hole 2-2 and two first through holes 2-1 for the support column 3-2 to pass through, and the two support columns 3-2 of the outer cylindrical support plate 3 are respectively inserted into the two first through holes 2-1, and the positioning device also includes a leveling bolt 9, and the top of the leveling bolt 9 is supported on the bottom surface of the support portion 3-1 after passing through the second through hole 2-2. The bottom of the outer cylindrical support plate 3 adopts the design of the support column 3-2, and combined with the leveling bolt 9, the height adjustment of the outer cylindrical portion 1-1 of the sleeve can be achieved, thereby improving convenience and stability. Moreover, in some embodiments, the second through hole 2-2 is a screw hole, which can have fewer parts. Of course, in some other embodiments, a leveling nut 7 is welded on the top of the bottom plate 2, and the leveling nut 7 and the axis and the axis of the second through hole 2-2 are in a straight line. In this way, due to the existence of the leveling nut 7, the thickness of the leveling nut 7 plus the thickness of the bottom plate 2 itself, the two can be superimposed to obtain a thicker support end, thereby improving stability.

[0039] In most embodiments, Figure 6 As shown, the first pressing plate 6 includes a first elastic bracket 6-1, a first lower pressing plate 6-2, a first spring 6-3 and a first clamping bolt 6-4. Figure 7 As shown, the second pressing plate 8 includes a second elastic bracket 8-1, a second lower pressing plate 8-2, a second spring 8-3 and a second pressing bolt 8-4. Figure 5 As shown, the first threaded hole 2-3 and the second threaded hole 2-4 are formed on the bottom plate 2, one end of the first lower pressing plate 6-2 is connected to the first elastic bracket 6-1, the bottom of the first elastic bracket 6-1 is fixed to the bottom plate 2, the first clamping bolt 6-4 passes through the first elastic bracket 6-1 and the first spring 6-3 in sequence and then screws into the first threaded hole 2-3, one end of the second lower pressing plate 8-2 is connected to the second elastic bracket 8-1, the bottom of the second elastic bracket 8-1 is fixed to the bottom plate 2, the second clamping bolt 8-4 passes through the second elastic bracket 8-1 and the second spring 8-3 in sequence and then screws into the first threaded hole 2-3. The designed first pressing plate 6 and second pressing plate 8 have the advantages of easy adjustment and small space occupation.

[0040] Moreover, in most of the embodiments, the first lower pressing plate 6 - 2 is semi-annular, and a stable pressing effect can be achieved by using less material.

[0041] In addition, connection plates 10 are provided at both ends of the bottom plate 2 to facilitate connection with processing equipment.

[0042] The traction sleeve 1 is used as a workpiece. When the device of the present application is used, it is necessary to first mesh the tooth surface of the workpiece with the positioning toothed disc 11, tighten the leveling bolts 9, drive the outer cylindrical support plate 3 to move upward until it contacts the side arc of the sleeve outer cylindrical part 1-1 that fits the workpiece, and then tighten all the fastening bolts 5 installed on the auxiliary top plate 4 until it supports a bottom surface of the sleeve outer cylindrical part 1-1 of the workpiece. After the workpiece is positioned and leveled, the first clamping bolt 6-4 and the second clamping bolt 8-4 are locked, so that the first lower clamping plate 6-2 of the first clamping plate 6 and the second lower clamping plate 8-2 of the second clamping plate 8 clamp the workpiece, completing the drilling and boring process of the plane and the side.

[0043] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A positioning device for traction bearing processing, comprising a base plate (2), a limiting mechanism arranged on the base plate (2), and a clamping mechanism used in conjunction with the limiting mechanism, characterized in that: The limiting mechanism comprises a positioning toothed disc (11), an outer circular support plate (3) and an auxiliary top plate (4); the bottoms of the positioning toothed disc (11), the outer circular support plate (3) and the auxiliary top plate (4) are all fixed on the bottom plate (2); the upper surface of the positioning toothed disc (11) is provided with a tooth surface that matches the teeth on the tooth surface portion (1-2) of the traction shaft sleeve (1); the upper surface of the outer circular support plate (3) is in an arc shape that matches the side surface of the shaft sleeve outer circular portion (1-1) of the traction shaft sleeve (1); the auxiliary top plate (4) is located on one side of the outer circular support plate (3) and is used to support a bottom surface of the shaft sleeve outer circular portion (1-1); The clamping mechanism comprises a first clamping plate (6) for clamping and fixing the tooth surface portion (1-2) and a second clamping plate for clamping and fixing the outer circumference portion (1-1) of the sleeve, and the bottoms of the first clamping plate (6) and the second clamping plate (8) are both mounted on the base plate (2).

2. A positioning device for traction bearing processing according to claim 1, characterized in that: The projection area of ​​the upper surface of the outer circular support plate (3) on the bottom plate (2) and the projection area of ​​the auxiliary top plate (4) on the bottom plate (2) are both axisymmetric figures, and the axes of symmetry of the two are on a straight line.

3. A positioning device for traction bearing processing according to claim 1, characterized in that: The auxiliary top plate (4) and the bottom surface of the outer circumference of the sleeve (1-1) are connected via fastening bolts (5).

4. A positioning device for traction bearing processing according to claim 3, characterized in that: At least three fastening bolts (5) are provided.

5. A positioning device for traction bearing processing according to claim 1, characterized in that: The outer circular support plate (3) comprises a support portion (3-1) and two support columns (3-2) arranged below the support portion (3-1); the bottom plate (2) is provided with a second through hole (2-2) and two first through holes (2-1) for the support columns (3-2) to pass through; the two support columns (3-2) of the outer circular support plate (3) are respectively inserted into the two first through holes (2-1); the positioning device further comprises a leveling bolt (9); after the leveling bolt (9) passes through the second through hole (2-2), the top of the bolt is supported on the bottom surface of the support portion (3-1).

6. A positioning device for traction bearing processing according to claim 5, characterized in that: The second through hole (2-2) is a screw hole.

7. A positioning device for traction bearing processing according to claim 5, characterized in that: A leveling nut (7) is welded to the top of the bottom plate (2), and the leveling nut (7) and the axis are in a straight line with the axis of the second through hole (2-2).

8. A positioning device for traction bearing processing according to claim 1, characterized in that: The first pressing plate (6) includes a first elastic bracket (6-1), a first lower pressing plate (6-2), a first spring (6-3) and a first clamping bolt (6-4); the second pressing plate (8) includes a second elastic bracket (8-1), a second lower pressing plate (8-2), a second spring (8-3) and a second clamping bolt (8-4); a first threaded hole (2-3) and a second threaded hole (2-4) are formed on the bottom plate (2); one end of the first lower pressing plate (6-2) is connected to the first elastic bracket (6-1); and the first elastic bracket The bottom of the second lower pressure plate (8-2) is fixed on the bottom plate (6-1), the first clamping bolt (6-4) passes through the first elastic bracket (6-1) and the first spring (6-3) in sequence and is screwed into the first threaded hole (2-3), one end of the second lower pressure plate (8-2) is connected to the second elastic bracket (8-1), the bottom of the second elastic bracket (8-1) is fixed on the bottom plate (2), the second clamping bolt (8-4) passes through the second elastic bracket (8-1) and the second spring (8-3) in sequence and is screwed into the first threaded hole (2-3).

9. A positioning device for traction bearing processing according to claim 8, characterized in that: The first lower pressing plate (6-2) is semi-annular.

10. A positioning device for traction bearing processing according to claim 1, characterized in that: Connecting plates (10) are provided at both ends of the bottom plate (2).

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