Fixing clamp for pawl machining

Abstract

A fixing clamp for pawl machining relates to the field of pawl machining and comprises a bottom plate, two sliding mounting mechanisms are mounted on the bottom plate, and a first conical clamping mechanism and a second conical clamping mechanism are mounted on the sliding mounting mechanisms. The first conical fixing piece and the second conical fixing piece with the first inserting groove and the second inserting groove formed in the conical ends are mutually inserted and clamp the pawl for fixation, fixation is firm, and feeding is easy; the first conical fixing piece rotates when passing through the spiral groove to drive the second conical fixing piece to rotate together to scrape burrs on the edge of the pawl hole, the machining steps of the pawl are omitted, and the machining efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of ratchet processing, in particular to a fixing fixture for ratchet processing. Background Art

[0002] The pawl is a part used in conjunction with the ratchet, which is used to brake the ratchet and prevent it from reversing. It is widely used in various fields such as parking brakes and machine tool brakes. The pawl needs to be punched, edge cut, polished and other processes during processing. The punching process has become increasingly mature. After punching, the edge cutting or polishing processes are usually carried out using the already formed holes for fixation. The pawl after punching can be fixed on the fixing column. However, if the diameter of the fixing column used is too close to the diameter of the hole on the pawl, it will be difficult to put it on. If the diameter difference between the fixing column and the pawl is too large, the fixation will not be firm, and the pawl will easily loosen during processing. In comparison, the patent with application number 202021123192.2 discloses a pawl processing fixture for automobiles. This patent uses a fixing column to insert into the two holes processed on the pawl to fix the pawl. There are the above-mentioned problems of loose fixation if the diameter difference is large and difficult to insert if the difference is small. In addition, the burrs on the edge after punching the pawl also need to be removed in an additional process. Utility Model Content

[0003] In order to overcome the shortcomings of the background technology, the utility model discloses a fixing fixture for pawl processing. The utility model has a first conical fixing piece and a second conical fixing piece with a first slot and a second slot opened at the conical end, which are inserted into each other and clamp the pawl for fixing. The fixing is firm and easy to load. The rotation of the first conical fixing piece when passing through the spiral spiral groove drives the second conical fixing piece to rotate together to scrape off burrs on the edge of the pawl hole, saving the processing steps of the pawl and improving the processing efficiency.

[0004] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0005] A fixing fixture for pawl processing comprises a base plate, two sets of sliding mounting mechanisms are installed on the base plate, and a first tapered clamping mechanism and a second tapered clamping mechanism are installed on the sliding mounting mechanisms.

[0006] Vertical plates are respectively fixed vertically upwards on the left and right ends of the upper surface of the bottom plate.

[0007] The sliding installation mechanism includes two fixed columns, the left and right ends of the fixed columns are respectively fixed on the inner sides of the two vertical plates, a stop column is formed on the left end side of the fixed column, a spiral groove is opened on the side of the fixed column near the stop column, a straight groove is opened on the fixed column to connect with the spiral groove, and a fracture groove is opened in the middle of the fixed column to completely penetrate the fixed column.

[0008] The first conical clamping mechanism includes two first conical fixing members with pointed ends facing rightwards. A first sliding hole is opened in the middle of the first conical fixing member. A clamping member is symmetrically fixed in the first sliding hole on the first conical fixing member. A spring is fixed in the middle of the left side of the first conical fixing member. The right end of the side surface of the first conical fixing member is opened in an equidistant circular array with the central axis of the first conical fixing member as the center. No less than four first slots are opened.

[0009] The two first sliding holes are respectively slidably connected with fixed columns, the clamping piece is slidably connected in the spiral groove and the straight groove, the spring and the stop column are coaxial, and the left end of the spring is fixed on the inner side of the vertical plate.

[0010] The second conical clamping mechanism includes two second conical fixing members with arrows pointing leftward. A second sliding hole is provided in the middle of the second conical fixing member. At least four second slots are provided on the left end of the side surface of the second conical fixing member in an equidistant circular array centered on the central axis of the second conical fixing member. A conical chamfered tip is formed on the left end of the second conical fixing member between the two second slots. The right side of the second conical fixing member is symmetrically connected to the electric telescopic rods in a sliding manner front and back.

[0011] A fixing column is slidably connected in each of the two second sliding holes. The right end of the first conical fixing member is slidably connected to the second slot between the two first slots. The left end of the second conical fixing member is slidably connected to the first slot between the two second slots.

[0012] The right end of the electric telescopic rod is fixed on the inner side of the vertical plate.

[0013] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0014] The utility model discloses a fixing fixture for processing a pawl. The first conical fixing piece and the second conical fixing piece are provided with a first slot and a second slot at the conical end, and are inserted into each other and clamp the pawl for fixing. The fixing is firm and easy to load. The rotation of the first conical fixing piece when passing through the spiral spiral groove drives the second conical fixing piece to rotate together to scrape off the burrs on the edge of the pawl hole, thereby saving the processing steps of the pawl and improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal assembly three-dimensional structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the sliding installation mechanism of the utility model;

[0018] Figure 4This is a schematic diagram of the three-dimensional structure of the first conical clamping mechanism of the present invention;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the second conical clamping mechanism of the present invention.

[0020] 1. Base plate; 101. Vertical plate; 2. Fixed column; 201. Stop column; 202. Spiral groove; 203. Straight groove; 204. Fracture groove; 3. First conical fixing member; 301. First slot; 302. First sliding hole; 303. Clamp; 304. Spring; 4. Second conical fixing member; 401. Second slot; 402. Second sliding hole; 403. Chamfered tip; 404. Electric telescopic rod. Implementation Method

[0021] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0022] Combined with attachment Figures 1 to 5 A fixing fixture for pawl processing includes a base plate 1, two sets of sliding mounting mechanisms are installed on the base plate 1, and a first conical clamping mechanism and a second conical clamping mechanism are installed on the sliding mounting mechanism.

[0023] Vertical plates 101 are fixed vertically upwards at the left and right ends of the upper surface of the bottom plate 1 respectively.

[0024] The sliding installation mechanism includes two fixing columns 2, and the left and right ends of the fixing columns 2 are respectively fixed on the inner sides of the two vertical plates 101. A stop column 201 is formed on the side surface of the left end of the fixing column 2. The diameter of the stop column 201 is larger than that of the fixing column 2, and the diameter of the fixing column 2 is less than half of the diameter of the pawl, so that the staff can more conveniently align the hole on the pawl with the fixing column 2. A spiral spiral groove 202 is provided on the side of the fixing column 2 near the stop column 201, so that after the clamping part 303 enters the spiral groove 202, it can drive the first conical fixing part 3 and the second conical fixing part 4 to rotate to remove burrs on the pawl hole. A straight groove 203 is provided on the fixing column 2 to communicate with the spiral groove 202, and a fracture groove 204 is provided in the middle of the fixing column 2 to completely penetrate the fixing column 2.

[0025] The first conical clamping mechanism includes two first conical fixing members 3 with pointed ends facing rightwards. A first sliding hole 302 is provided in the middle of the first conical fixing member 3. A clamping member 303 is symmetrically fixed in the first sliding hole 302 on the first conical fixing member 3. A spring 304 is fixed in the middle of the left side of the first conical fixing member 3. At the right end of the side surface of the first conical fixing member 3, there are at least four first slots 301 in an equidistant circular array centered on the central axis of the first conical fixing member 3.

[0026] The two first sliding holes 302 are respectively slidably connected with fixed columns 2, the clamping member 303 is slidably connected in the spiral groove 202 and the straight groove 203, the spring 304 is coaxial with the stop column 201, and the left end of the spring 304 is fixed on the inner side of the vertical plate 101.

[0027] The second conical clamping mechanism includes two second conical fixing members 4 with arrows pointing to the left. A second sliding hole 402 is provided in the middle of the second conical fixing member 4. The left end of the side surface of the second conical fixing member 4 is provided with no less than four second slots 401 in an equidistant circular array with the central axis of the second conical fixing member 4 as the center. The left end of the second conical fixing member 4 is located between the two second slots 401 and is formed with a conical chamfered tip 403. The right side of the second conical fixing member 4 is symmetrically connected to the electric telescopic rod 404 for sliding front and back. Specifically, the right end of the electric telescopic rod 404 is fixed on the vertical plate 101, and the telescopic end on the left side of the electric telescopic rod 404 is in contact with the second conical fixing member 4 but not fixed. When the first conical fixing member 3 drives the second conical fixing member 4 to rotate, the left end of the electric telescopic rod 404 can move on the second conical fixing member 4 without hindering the rotation of the second conical fixing member 4.

[0028] A fixing column 2 is slidably connected in the two second sliding holes 402 respectively, the right end of the first conical fixing member 3 is located between the two first slots 301 and is slidably connected in the second slot 401, and the left end of the second conical fixing member 4 is located between the two second slots 401 and is slidably connected in the first slot 301.

[0029] The right end of the electric telescopic rod 404 is fixed to the inner side of the vertical plate 101 .

[0030] The above-mentioned fixing fixture for pawl processing is used. When the electric telescopic rod 404 is shortened, it drives the first conical fixing part 3 to move to the left on the fixing column 2. The staff puts the pawl into the fracture groove 204 and aligns the two holes punched on the pawl with the fixing column 2. Since the diameter of the fixing column 2 is much smaller than the diameter of the hole on the pawl, the staff can easily align the hole on the pawl with the fixing column 2. Then the electric telescopic rod 404 is extended, driving the second conical fixing part 4 to move to the left on the fixing column 2. The tip of the left end of the second conical fixing part 4 can push the pawl to the first conical fixing part 3 and the second conical fixing part 4, and the pawl between the first and second conical fixing members 3 and 4 moves upward to be coaxial with the fixing column 2 under the pushing action of the first and second conical fixing members 3 and 4, and the hole on the pawl can be closely abutted against the first and second conical fixing members 3 and 4 and is directly aligned with the hole on the pawl. The positions with the same diameter are clamped. When the second conical fixing member 4 pushes the first conical fixing member 3 to move leftward on the fixing column 2, the first conical fixing member 3 can compress the spring 304. As the clamping member 303 on the first conical fixing member 3 moves from the straight groove 203 to the spiral groove 202, the spiral-shaped spiral groove 202 can drive the first conical fixing member 3 to rotate, and the first conical fixing member 3 drives the second conical fixing member 4 to rotate. The edges of the first conical fixing member 3 and the second conical fixing member 4 that contact the hole of the pawl can scrape off the burrs on the hole of the pawl. Finally, the first conical fixing member 3 contacts the stop column 201. The right end stops rotating, and the electric telescopic rod 404 provides pressure to press the second conical fixing part 4 onto the first conical fixing part 3, and firmly fix the pawl between the first conical fixing part 3 and the second conical fixing part 4. After the processing is completed, the electric telescopic rod 404 is shortened and separated from the second conical fixing part 4. The elastic potential energy stored in the spring 304 pushes the first conical fixing part 3 and the second conical fixing part 4 to the right on the fixing column 2. The pressure between the first conical fixing part 3 and the second conical fixing part 4 disappears, and the staff can easily move the pawl piece to the position of the fracture groove 204 and remove the processed pawl.

[0031] The parts of the present invention that are not described in detail are prior art. Although the present invention is specifically demonstrated and introduced in conjunction with the preferred implementation scheme, there are many methods and ways to implement the technical solution. The above is only a preferred implementation scheme of the present invention. However, technical personnel in the relevant field should understand that various changes can be made to the form and details of the present invention without departing from the spirit and scope of the present invention as defined by the attached claims, and all of them are within the scope of protection of the present invention.

Claims

1. A fixing fixture for pawl processing, comprising a base plate (1), characterized in that: Two sets of sliding mounting mechanisms are installed on the base plate (1), and a first conical clamping mechanism and a second conical clamping mechanism are installed on the sliding mounting mechanism; Vertical plates (101) are respectively fixed vertically upwards at the left and right ends of the upper surface of the bottom plate (1); The sliding installation mechanism comprises two fixed columns (2), the left and right ends of the fixed columns (2) are respectively fixed to the inner sides of the two vertical plates (101), a stop column (201) is formed on the left end side surface of the fixed column (2), a spiral groove (202) is provided on the side surface of the fixed column (2) near the stop column (201), a straight groove (203) is provided on the fixed column (2) and is connected to the spiral groove (202), and a fracture groove (204) is provided in the middle of the fixed column (2) to completely penetrate the fixed column (2); The first conical clamping mechanism comprises two first conical fixing members (3) with pointed ends facing rightwards, a first sliding hole (302) being provided in the middle of the first conical fixing member (3), a clamping member (303) being symmetrically fixed in the first sliding hole (302) on the first conical fixing member (3), a spring (304) being fixed in the middle of the left side of the first conical fixing member (3), and a first slot (301) having no less than four equidistant circular arrays being provided on the right end of the side surface of the first conical fixing member (3) with the central axis of the first conical fixing member (3) as the center; The two first sliding holes (302) are respectively slidably connected to fixed columns (2), the clamping member (303) is slidably connected to the spiral groove (202) and the straight groove (203), the spring (304) is coaxial with the stop column (201), and the left end of the spring (304) is fixed to the inner side of the vertical plate (101); The second conical clamping mechanism comprises a second conical fixing member (4) with two arrows pointing to the left, a second sliding hole (402) is provided in the middle of the second conical fixing member (4), and at least four second slots (401) are provided in an equidistant circular array centered on the central axis of the second conical fixing member (4) at the left end of the side surface of the second conical fixing member (4), a conical chamfered tip (403) is formed on the left end of the second conical fixing member (4) between the two second slots (401), and the right side of the second conical fixing member (4) is symmetrically connected to the electric telescopic rod (404) in a sliding manner. The two second sliding holes (402) are respectively slidably connected to the fixing columns (2), the right end of the first conical fixing member (3) is located between the two first slots (301) and is slidably connected to the second slot (401), and the left end of the second conical fixing member (4) is located between the two second slots (401) and is slidably connected to the first slot (301).

2. A fixing fixture for pawl processing according to claim 1, characterized in that: The right end of the electric telescopic rod (404) is fixed to the inner side of the vertical plate (101).

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