High-precision rack grinding clamp

Abstract

The utility model relates to the technical field of clamps, in particular to a high-precision rack grinding clamp which comprises a supporting base, a plurality of sliding rods are connected to the two sides of the supporting base in a sliding mode, connecting plates are fixedly connected to one ends of the sliding rods, a rack body is arranged between every two opposite connecting plates, and sliding plates are connected to the connecting plates in a sliding mode. The two sliding plates abut against the two ends of the rack body respectively, two guide grooves are formed in the sliding plates, two abutting plates are slidably connected to the connecting plate, guide shafts are fixedly connected to the abutting plates, the guide shafts penetrate through the adjacent guide grooves and are slidably connected with the sliding plates, and the four abutting plates abut against the two sides of the rack body respectively. A driving structure is arranged on the supporting seat; according to the gear grinding device, the two ends of a rack can be clamped and fixed while the two sides of the rack are clamped and fixed, so that the clamping firmness can be improved, the rack is prevented from moving in the machining process, and the gear grinding machining precision is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to a fixture, specifically a high-precision rack grinding fixture, belonging to the field of fixture technology. Background Technology

[0002] The main functions of rack grinding include improving accuracy, reducing noise and vibration, extending service life, and improving transmission efficiency. Grinding involves grinding the tooth surface and sides of the rack to remove burrs and deformation, thereby improving the rack's accuracy. This processing method can significantly improve the tooth profile accuracy of the rack, ensure proper meshing between the rack and gears, reduce impact and vibration, and thus reduce noise. During the grinding process, the rack needs to be clamped by a fixture to prevent it from moving.

[0003] However, traditional rack clamps only hold the rack by pressing against its sides, leaving the ends unsecured. This results in a less secure grip, which may cause the rack to move during machining, thus reducing the precision of the gear grinding process. Utility Model Content

[0004] The purpose of this invention is to provide a high-precision rack grinding fixture to solve the above-mentioned problems. It can clamp and fix both sides of the rack, thereby improving the clamping firmness, preventing the rack from moving during processing, and effectively ensuring the accuracy of the grinding process.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a high-precision rack grinding fixture includes a support base, on which a fixing structure is provided. The fixing structure includes a slide rod and a connecting plate. Multiple slide rods are slidably connected to both sides of the support base. A connecting plate is fixedly connected to one end of each slide rod. A rack body is provided between two opposing connecting plates. A sliding plate is slidably connected to the connecting plate. The two sliding plates abut against both ends of the rack body. Two guide grooves are provided on the sliding plate. Two abutment plates are slidably connected to the connecting plate. A guide shaft is fixedly connected to the abutment plate. The guide shaft passes through adjacent guide grooves and is slidably connected to the sliding plate. The four abutment plates abut against both sides of the rack body. A driving structure is provided on the support base.

[0006] Preferably, a spring is fixedly connected to the skateboard, and one end of the spring is fixedly connected to the connecting plate.

[0007] Preferably, the two guide grooves form a V-shaped structure, and the two abutments are symmetrically distributed about the middle of the connecting plate.

[0008] Preferably, the multiple sliding rods located on the same side of the support base are linearly and equidistantly distributed, and the sliding directions of the sliding plate and the backing plate are perpendicular to each other.

[0009] Preferably, the support base has multiple mounting grooves on both sides of its bottom end, and the mounting grooves have a U-shaped cross-section.

[0010] Preferably, the driving structure includes a connecting rod and a linkage rod. One end of a plurality of sliding rods located on the same side of the support base is fixedly connected to the same connecting rod. Both ends of the connecting rod are rotatably connected to a linkage rod. One end of two adjacent linkage rods is rotatably connected to the same connecting shaft. The support base has a sliding groove in the middle. One end of the connecting shaft extends into the interior of the sliding groove and is slidably connected to the support base.

[0011] Preferably, a connecting block is fixedly connected to the support base, and an electric push rod is installed on the connecting block. The extended end of the electric push rod is fixedly connected to one of the connecting rods.

[0012] Preferably, the two adjacent linkage rods form a V-shaped structure, and the two linkage rods located at both ends of the same connecting rod are symmetrically distributed about the middle of the connecting rod.

[0013] The beneficial effects of this utility model are as follows: When it is necessary to clamp the rack body, multiple rack bodies can be placed on the top of the support base, with their ends located inside the two connecting plates. Then, under the action of the drive structure, the two opposing connecting plates will move towards both ends of the rack simultaneously. During the movement of the connecting plates, the sliding plate will move towards the ends of the rack body along with the connecting plate. When both sliding plates abut against both ends of the rack body, the connecting plate will continue to move towards the ends of the rack body. The movement of the connecting plate will drive the two abutting plates to move. At the same time as the abutting plates move, the guide shaft will move inside the guide groove, thereby causing the abutting plates to move towards one side of the rack body. When both abutting plates are pressed against both sides of the rack body, the connecting plate stops moving. At this time, the two sliding plates abut against both ends of the rack body, and the four abutting plates abut against both sides of the rack body simultaneously, thereby achieving all-round fixation of the rack body, improving the firmness of the rack body fixation, preventing it from moving during the grinding process, and thus effectively ensuring the accuracy of the rack body grinding process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 for Figure 1 The enlarged schematic diagram of part A shown below;

[0016] Figure 3 This is a schematic diagram of the connection structure between the connecting rod and the linkage rod of this utility model;

[0017] Figure 4 This is a schematic diagram of the connection structure between the slide plate and the guide groove of this utility model.

[0018] In the diagram: 1. Support base; 2. Fixing structure; 201. Slide rod; 202. Connecting plate; 203. Slide plate; 204. Guide groove; 205. Guide shaft; 206. Support plate; 207. Spring; 3. Drive structure; 301. Connecting rod; 302. Linkage rod; 303. Electric push rod; 304. Connecting block; 305. Connecting shaft; 306. Slide groove; 4. Mounting groove; 5. Rack body. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a high-precision rack grinding fixture includes a support base 1, on which a fixing structure 2 is provided. The fixing structure 2 includes a slide rod 201 and a connecting plate 202. Multiple slide rods 201 are slidably connected to both sides of the support base 1. The multiple slide rods 201 located on the same side of the support base 1 are linearly and equidistantly distributed. One end of the slide rod 201 is fixedly connected to the connecting plate 202. A rack body 5 is provided between two opposing connecting plates 202. A slide plate 203 is slidably connected to the connecting plate 202. The two slide plates 203 abut against both ends of the rack body 5, respectively. Two guide grooves 204 are provided on the slide plate 203. Two abutment plates 206 are slidably connected to the connecting plate 202. A guide shaft 205 is fixedly connected to the abutment plate 206. The guide shaft 205 passes through adjacent guide grooves 204 and is slidably connected to the slide plate 203. The four abutment plates 206 abut against both sides of the rack body 5, respectively. A driving structure 3 is provided on the support base 1.

[0021] As a technical optimization solution of this utility model, such as Figure 2As shown, a spring 207 is fixedly connected to the slide plate 203. Since the elastic force of the spring 207 is greater than the friction between the rack body 5 and the support seat 1, when the rack body 5 is not placed in the exact middle of the two connecting plates 202, when one of the slide plates 203 contacts one end of the rack body 5, it will abut against the rack body 5 and slide on the support seat 1 until the other end of the rack body 5 abuts against the other slide plate 203, thereby achieving positioning of the rack body 5 in one direction. At the same time, when the connecting plate 202 moves away from the end of the rack body 5, the spring 207 extends and the two abutting plates 206 automatically open, thereby increasing the space at the end of the rack body 5, which facilitates the placement and removal of the rack body 5.

[0022] As a technical optimization solution of this utility model, such as Figure 2 and Figure 4 As shown, the two guide grooves 204 form a V-shaped structure. The sliding directions of the slide plate 203 and the abutment plate 206 are perpendicular to each other. The two abutment plates 206 are symmetrically distributed about the middle of the connecting plate 202. Therefore, the abutment plate 206 can move towards the side of the rack body 5 while the connecting plate 202 moves, until it contacts the side of the rack body 5, thereby achieving all-round fixation of the rack body 5.

[0023] As a technical optimization solution of this utility model, such as Figure 1 and Figure 3 As shown, the support base 1 has multiple mounting slots 4 on both sides of its bottom end. The support base 1 can be fixedly installed on the rack grinding machine by using the mounting slots 4 and bolts.

[0024] As a technical optimization solution of this utility model, such as Figure 3 As shown, the drive structure 3 includes a connecting rod 301 and a linkage rod 302. One end of a plurality of sliding rods 201 located on the same side of the support base 1 is fixedly connected to the same connecting rod 301. Both ends of the connecting rod 301 are rotatably connected to a linkage rod 302. The two adjacent linkage rods 302 form a V-shaped structure. The two linkage rods 302 located at both ends of the same connecting rod 301 are symmetrically distributed about the middle of the connecting rod 301. One end of two adjacent linkage rods 302 is rotatably connected to the same connecting shaft 305. The middle of the support base 1 is provided with a sliding groove 306. One end of the connecting shaft 305 extends into the interior of the sliding groove 306 and is slidably connected to the support base 1. Therefore, when one of the connecting rods 301 moves, the other connecting rod 301 can move in the opposite direction under the action of the four linkage rods 302, so that the multiple connecting plates 202 move towards or away from the end of the rack body 5 at the same time, which facilitates the quick fixation of the rack body 5 or the contact fixation of the rack body 5.

[0025] As a technical optimization solution of this utility model, such as Figure 3As shown, a connecting block 304 is fixedly connected to the support base 1, and an electric push rod 303 is installed on the connecting block 304. The extension of the electric push rod 303 can cause one of the connecting rods 301 to move.

[0026] In use, when it is necessary to clamp the rack body 5, multiple rack bodies 5 can be placed on the top of the support base 1, with their ends located inside the two connecting plates 202. Then, by activating the electric push rod 303, the electric push rod 303 extends and drives one of the connecting rods 301 to move. One of the connecting rods 301 drives two connecting shafts 305 to move in opposite directions inside the slide groove 306 via two linkage rods 302. At the same time, the two connecting shafts 305 move in opposite directions, which is also driven by the other two linkage rods 302. This causes another connecting rod 301 to move in the opposite direction. The movement of one connecting rod 301 will cause multiple sliding rods 201 to slide on the support base 1. The sliding rods 201 will cause the connecting plates 202 to move, so that multiple connecting plates 202 move towards the end of the rack body 5 at the same time. During the movement of the connecting plates 202, the sliding plate 203 will move towards the end of the rack body 5 along with the connecting plates 202. Since the elastic force of the spring 207 is greater than the friction between the rack body 5 and the support base 1, when the rack body 5 is not positioned between the two connecting plates 201, the sliding plate 203 will move towards the end of the rack body 5. At the exact center of position 02, when one of the sliding plates 203 contacts one end of the rack body 5, it will abut against the rack body 5 and slide on the support base 1 until the other end of the rack body 5 abuts against the other sliding plate 203, thus achieving positioning of the rack body 5 in one direction. When both sliding plates 203 abut against both ends of the rack body 5, the connecting plate 202 will continue to move towards the end of the rack body 5, the spring 207 will contract, and the movement of the connecting plate 202 will drive the two abutment plates 206 to move. At the same time as the abutment plates 206 move, the guide shaft 205 will guide... The electric push rod 303 stops extending when the two push plates 206 move towards one side of the rack body 5 and both push plates 206 are pressed against both sides of the rack body 5. At this time, the two slide plates 203 are in contact with both ends of the rack body 5, and the four push plates 206 are in contact with both sides of the rack body 5 at the same time, thereby achieving all-round fixation of the rack body 5, improving the firmness of the rack body 5 fixation, preventing it from moving during the grinding process, and thus effectively ensuring the precision of the rack body 5 grinding process.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-precision rack grinding fixture, comprising a support base (1), characterized in that: The support base (1) is provided with a fixing structure (2), which includes a slide rod (201) and a connecting plate (202). Multiple slide rods (201) are slidably connected to both sides of the support base (1). One end of the slide rod (201) is fixedly connected to the connecting plate (202). A rack body (5) is provided between two opposite connecting plates (202). A sliding plate (203) is slidably connected to the connecting plate (202). The two sliding plates (203) are respectively connected to the rack body (5). 5) The two ends of the slide plate (203) are in contact with each other. The slide plate (203) is provided with two guide grooves (204). The connecting plate (202) is slidably connected with two abutments (206). The abutments (206) are fixedly connected with guide shafts (205). The guide shafts (205) pass through the adjacent guide grooves (204) and are slidably connected with the slide plate (203). The four abutments (206) are in contact with the two sides of the rack body (5). The support base (1) is provided with a drive structure (3).

2. The high-precision rack grinding fixture according to claim 1, characterized in that: A spring (207) is fixedly connected to the slide plate (203), and one end of the spring (207) is fixedly connected to the connecting plate (202).

3. The high-precision rack grinding fixture according to claim 1, characterized in that: The two guide grooves (204) are V-shaped, and the two abutments (206) are symmetrically distributed about the middle of the connecting plate (202).

4. The high-precision rack grinding fixture according to claim 1, characterized in that: Multiple sliding rods (201) located on the same side of the support base (1) are linearly and equidistantly distributed, and the sliding directions of the sliding plate (203) and the abutment plate (206) are perpendicular to each other.

5. A high-precision rack grinding fixture according to claim 1, characterized in that: The support base (1) has multiple mounting grooves (4) on both sides of its bottom end, and the mounting grooves (4) have a U-shaped cross-section.

6. A high-precision rack grinding fixture according to claim 1, characterized in that: The drive structure (3) includes a connecting rod (301) and a linkage rod (302). One end of a plurality of sliding rods (201) located on the same side of the support base (1) is fixedly connected to the same connecting rod (301). Both ends of the connecting rod (301) are rotatably connected to a linkage rod (302). One end of two adjacent linkage rods (302) is rotatably connected to the same connecting shaft (305). The support base (1) is provided with a sliding groove (306) in the middle. One end of the connecting shaft (305) extends into the interior of the sliding groove (306) and is slidably connected to the support base (1).

7. A high-precision rack grinding fixture according to claim 6, characterized in that: A connecting block (304) is fixedly connected to the support base (1), and an electric push rod (303) is installed on the connecting block (304). The extended end of the electric push rod (303) is fixedly connected to one of the connecting rods (301).

8. A high-precision rack grinding fixture according to claim 6, characterized in that: The two adjacent linkage rods (302) form a V-shaped structure, and the two linkage rods (302) located at both ends of the same connecting rod (301) are symmetrically distributed about the middle of the connecting rod (301).

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