Positioning seat for processing connecting sleeve

Abstract

This utility model discloses a positioning seat for machining connecting sleeves, relating to the field of machining technology. It solves the problem of poor positioning accuracy and impact on machining accuracy when using conventional positioning methods for connecting sleeves. The positioning seat includes: a positioning base with a positioning groove adapted to the shape of the plate body; at least two opposite corners of the positioning groove each have a clearance area for exposing the machining area at the opposite corner of the main body; a receiving area for accommodating the cylindrical part within the positioning groove; and a threaded hole on the bottom surface of the receiving area; and a positioning bolt, the shank of which passes through a through hole in the middle of the connecting sleeve and is threadedly connected to the threaded hole, pressing the connecting sleeve onto the positioning base through the head of the positioning bolt. This positioning fixture has advantages such as simple structure and good positioning effect, ensuring consistent positional accuracy for each connecting sleeve positioning, thus improving machining accuracy. The clamping method for the connecting sleeve is relatively simple and suitable for batch processing.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a positioning seat for machining connecting sleeves. Background Technology

[0002] A connecting sleeve is a mechanical part used for connecting, fixing, or transmitting power. It is a hollow, cylindrical, sleeve-like structure. One type is... Figure 1 The connecting sleeve shown is a non-standard part, consisting of two parts: a square plate and a cylinder integrally connected, with a through hole in the middle of the square plate and cylinder. Two opposite corners of the square plate are chamfered, and the other two opposite corners have round holes. This connecting sleeve is cast, and there is adhesion in the area where the two round holes are located at the opposite corners of the cast square plate. See [the image for details]. Figure 2 The adhesive area needs to be cut off to make the round hole a semi-open structure.

[0003] When cutting this connecting sleeve using a machine tool, a positioning fixture is required to clamp and position it. Existing positioning and clamping methods typically use a vise or cylinder for clamping. Because the connecting sleeve is very small, usually only four or five centimeters wide, conventional clamping methods easily damage it, and the positional accuracy is inconsistent with each clamping, requiring recalibration after each machining operation. The area to be cut on the connecting sleeve is generally only one or two millimeters wide, so inconsistent positional accuracy significantly affects its cutting precision. Currently, there is an urgent need to solve the problem of difficult positioning of the connecting sleeve. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned problems by designing a positioning seat for machining connecting sleeves, which solves the problem of poor positioning accuracy and impact on machining accuracy when using conventional positioning methods for connecting sleeves.

[0005] The technical solution of this utility model to achieve the above objectives is a positioning seat for processing a connecting sleeve. The connecting sleeve includes a plate part and a cylindrical part. The positioning seat is used to position the connecting sleeve to facilitate processing of the diagonal parts of the plate part. The positioning seat includes: The positioning base has a positioning groove that is adapted to the shape of the plate part. At least two opposite corners of the positioning groove each have a clearance area for exposing the processing area of ​​the body part at the opposite corner. The positioning groove has a receiving area for accommodating the cylindrical part. The bottom surface of the receiving area is provided with a threaded hole. The positioning bolt has a shank that can pass through the through hole in the middle of the connecting sleeve and be threaded into the threaded hole. The head of the positioning bolt presses the connecting sleeve onto the positioning base.

[0006] Preferably, the upper surface of the positioning base is provided with at least two circular clearance grooves, and the two clearance grooves are respectively distributed at opposite corners of the positioning groove.

[0007] Preferably, the upper surface of the positioning base is provided with four circular clearance grooves, which are respectively distributed at the four corners of the positioning groove.

[0008] Preferably, a buffer is fitted onto the positioning bolt, the buffer being placed between the head of the positioning bolt and the connecting sleeve, and the buffer having a through hole in the middle to facilitate the passage of the shank of the positioning bolt.

[0009] Preferably, the buffer includes a cushioning portion and a plug portion integrally connected to the bottom of the cushioning portion, wherein the outer diameter of the plug portion is consistent with the diameter of the through hole on the connecting sleeve.

[0010] Preferably, the middle region of the positioning groove is provided with a receiving groove for accommodating the cylindrical part, and the diameter of the receiving groove is consistent with the outer diameter of the cylindrical part.

[0011] Preferably, the head of the positioning bolt has an internal hexagonal hole.

[0012] Preferably, the depth of the positioning groove is less than the thickness of the plate portion of the connecting sleeve.

[0013] Its advantages over existing technologies are: This utility model's positioning fixture has advantages such as simple structure and good positioning effect. After the connecting sleeve is placed on the positioning base, the cylindrical part of the connecting sleeve is in the receiving area, and the plate part is partially embedded in the positioning groove. The avoidance area at the diagonal of the positioning groove exposes the area to be cut at the diagonal of the plate part, facilitating cutting processing of this part. Then, the shank of the positioning bolt passes through the through hole in the middle of the connecting sleeve and is directly threaded into the threaded hole at the bottom of the receiving area. The head of the positioning bolt presses and fixes the connecting sleeve on the positioning base. Since the position of the positioning base does not move each time the connecting sleeve is picked up or put down, the positioning groove on the positioning base can ensure the uniformity of the position of the connecting sleeve during positioning, which helps to improve the processing accuracy. At the same time, the clamping method of the connecting sleeve is relatively simple and suitable for batch processing. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the connecting sleeve; Figure 2 It shows the plan view of the connecting sleeve before and after cutting; Figure 3 This is a schematic diagram of the structure after the positioning seat positions the connecting sleeve; Figure 4 This is an exploded view of the positioning seat; Figure 5 This is a structural diagram of the positioning base; Figure 6 This is a schematic diagram of the buffer component.

[0015] In the figure, 1 is the positioning base; 101 is the positioning groove; 1011 is the clearance groove; 102 is the receiving groove; 103 is the threaded hole; 2 is the buffer component; 201 is the bearing part; 202 is the insertion part; 3 is the positioning bolt; 4 is the connecting sleeve; 401 is the plate part; 402 is the cylindrical part. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0017] like Figures 3-4 As shown, a preferred embodiment of this utility model proposes a positioning seat for processing connecting sleeves, which is used to accurately position the connecting sleeve 4 so that the machine tool can cut and process the connecting sleeve 4, while ensuring that the position is consistent each time it is positioned.

[0018] See Figure 1 The connecting sleeve 4 includes a plate portion 401 and a cylindrical portion 402. The plate portion 401 is a square plate, and the cylindrical portion 402 is a sleeve-shaped structure. The circular hole in the center of the square plate communicates with the through hole on the cylindrical portion 402. During casting, chamfers are formed at two opposite corners of the plate portion 401 of the connecting sleeve 4, and a circular hole is formed at each of the other two opposite corners. At the same time, a very thin layer of adhesion is formed at the edge of the circular hole. This adhesion needs to be cut off during machining.

[0019] For details, see Figure 4 The positioning seat mainly includes components such as positioning base 1, buffer 2, and positioning bolt 3.

[0020] See Figure 5 The positioning base 1 has a cubic structure and a flat upper surface. A positioning groove 101 is provided in the middle area of ​​the upper surface. The shape of the positioning groove 101 is adapted to the shape of the plate part 401, but the depth of the positioning groove 101 is less than the thickness of the plate part 401 so that the connecting sleeve 4 protrudes from the upper surface of the positioning base 1.

[0021] A circular receiving groove 102 is formed by a downward indentation in the middle region of the positioning groove 101. This receiving groove 102 is used to accommodate the cylindrical portion 402 of the connecting sleeve 4. The depth of the receiving groove 102 is not less than the axial length of the cylindrical portion 402. In this embodiment, it is preferable that the depth of the receiving groove 102 and the axial length of the cylindrical portion 402 are consistent, so that the bottom surface of the receiving groove 102 can provide support for the cylindrical portion 402.

[0022] A threaded hole 103 is provided at the center of the bottom surface of the receiving groove 102, which is used to connect with the positioning bolt 3.

[0023] After the connecting sleeve 4 is placed on the positioning base 1, the cylindrical part 402 of the connecting sleeve 4 will be embedded into the receiving groove 102, and the plate part 401 will be partially embedded into the positioning groove 101.

[0024] The buffer 2 is made of elastic material and plays a buffering role to prevent the positioning bolt 3 from pressing marks on the surface of the connecting sleeve 4 and affecting the appearance quality.

[0025] See Figure 6 The buffer 2 consists of two parts: a bearing portion 201 and a connecting portion 202. Both the bearing portion 201 and the connecting portion 202 are circular, and the connecting portion 202 is integrally connected to the central area of ​​the bottom of the bearing portion 201. There is a through hole in the middle area between the connecting portion 202 and the bearing portion 201, and the diameter of the through hole is approximately the same as the diameter of the shank of the positioning bolt 3.

[0026] The diameter of the bearing portion 201 is larger than the head diameter of the positioning bolt 3 and the diameter of the through hole in the middle of the connecting sleeve 4. The bearing portion 201 is used to support the head of the positioning bolt 3, separating the head of the positioning bolt 3 from the plate portion 401 of the connecting sleeve 4, thereby buffering and dispersing pressure.

[0027] The size of the padding part 201 is limited so that it will not obstruct the area to be cut at the diagonal corner of the plate part 401.

[0028] like Figure 1 As shown, the positioning bolt 3 is a headed hexagonal bolt with an internal hexagonal hole in the head so that the positioning bolt 3 can be turned by an internal hexagonal wrench.

[0029] See Figure 5 In this embodiment, a circular clearance groove 1011 is formed at each of the four corners of the positioning groove 101 on the positioning base 1. The circular clearance groove 1011 partially coincides with the four corners of the positioning groove 101, and the clearance groove 1011 is connected to the positioning groove 101. The circular clearance groove 1011 is used to avoid the cutting head of the machine tool, so that the cutting head will not hit the positioning base 1 when cutting the adhesive area at the diagonal corner of the plate body 401.

[0030] With the four clearance slots 1011 provided, there is no need to worry about whether the connecting sleeve 4 is positioned correctly. Regardless of which clearance slot 1011 the adhesive part at the diagonal corner of the connecting sleeve 4 plate body 401 is located in, there is no need to worry about whether it will affect the cutting.

[0031] In other technical solutions, only two clearance grooves 1011 can be provided, with the two clearance grooves 1011 being diagonally distributed. In this case, the position of the connecting sleeve 4 must be correctly placed, and the adhesive part at the diagonal corner of the plate body 401 must correspond to the position of the two clearance grooves 1011.

[0032] After the connecting sleeve 4 is placed into the positioning groove 101, the insertion part 202 of the buffer 2 is inserted into the through hole in the middle of the connecting sleeve 4. Then, the shank of the positioning bolt 3 passes through the through hole in the middle of the buffer 2, and the positioning bolt 3 is tightened with a wrench so that the shank of the positioning bolt 3 is threadedly connected to the threaded hole 103 in the receiving groove 102. After tightening, the head of the positioning bolt 3 will press the buffer 2, and the buffer 2 will press the connecting sleeve 4. In this way, the connecting sleeve 4 can be pressed and fixed, and the connecting sleeve 4 will not move during processing.

[0033] In other technical solutions, the buffer 2 can be omitted, and the connecting sleeve 4 can be directly pressed and fixed on the positioning base 1 by the positioning bolt 3.

[0034] Before processing, the positioning base 1 is clamped and fixed on the machine tool platform. Each time it is clamped, there is no need to move the positioning base 1. The connecting sleeve 4 is fixed on the positioning base 1 by the buffer 2 and the positioning bolt 3. This can ensure that the position is consistent each time it is positioned, thereby improving the processing accuracy.

[0035] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A positioning seat for machining a connecting sleeve, the connecting sleeve (4) comprising a plate portion (401) and a cylindrical portion (402), the positioning seat being used to position the connecting sleeve (4) to facilitate machining of the diagonal portions of the plate portion (401), characterized in that, The positioning base includes: The positioning base (1) has a positioning groove (101) that is adapted to the shape of the plate part (401). At least two opposite corners of the positioning groove (101) each have a clearance area for exposing the processing area at the opposite corner of the main body part. The positioning groove (101) has a receiving area for accommodating the cylindrical part (402). The bottom surface of the receiving area is provided with a threaded hole (103). The positioning bolt (3) has a shank that can pass through the through hole in the middle of the connecting sleeve (4) and be threaded to the threaded hole (103). The head of the positioning bolt (3) presses the connecting sleeve (4) onto the positioning base (1).

2. The positioning seat for processing the connecting sleeve according to claim 1, characterized in that, The upper surface of the positioning base (1) is provided with at least two circular clearance grooves (1011), and the two clearance grooves (1011) are respectively distributed at opposite corners of the positioning groove (101).

3. The positioning seat for processing the connecting sleeve according to claim 2, characterized in that, The upper surface of the positioning base (1) is provided with four circular clearance grooves (1011), and the four clearance grooves (1011) are respectively distributed at the four corners of the positioning groove (101).

4. The positioning seat for processing the connecting sleeve according to claim 1, characterized in that, A buffer (2) is fitted on the positioning bolt (3). The buffer (2) is used to be placed between the head of the positioning bolt (3) and the connecting sleeve (4). The buffer (2) has a through hole in the middle to facilitate the passage of the rod of the positioning bolt (3).

5. The positioning seat for processing the connecting sleeve according to claim 4, characterized in that, The buffer (2) includes a cushioning part (201) and a plug-in part (202) integrally connected to the bottom of the cushioning part (201). The outer diameter of the plug-in part (202) is consistent with the diameter of the through hole on the connecting sleeve (4).

6. The positioning seat for machining the connecting sleeve according to claim 1, characterized in that, The positioning groove (101) has a receiving groove (102) in the middle area for accommodating the cylindrical part (402), and the diameter of the receiving groove (102) is consistent with the outer diameter of the cylindrical part (402).

7. The positioning seat for machining the connecting sleeve according to claim 1, characterized in that, The head of the positioning bolt (3) has an internal hexagonal hole.

8. The positioning seat for machining the connecting sleeve according to claim 1, characterized in that, The depth of the positioning groove (101) is less than the thickness of the plate part (401) of the connecting sleeve (4).

Images