Fixture for grinding end face of columnar workpiece

Abstract

The utility model discloses a fixture for cylindrical workpiece end face grinding, and relates to the technical field of cylindrical workpiece end face grinding. The fixture comprises a base, an adjusting mechanism is fixedly installed on one side of the base, a clamping mechanism is fixedly installed on the side, opposite to the base, of the adjusting mechanism, and the clamping mechanism comprises a shell; a first side gear is rotationally installed on the inner wall of one side of the shell, and the outer surface of the first side gear is connected with a second side gear in a meshed mode. By arranging the clamping mechanism, a cylindrical workpiece can be fixed through the clamping mechanism, the cylindrical workpiece can be better stressed when fixed through a plurality of arc-shaped clamping barrels, and therefore the cylindrical workpiece can be fixed more stably; the adjusting mechanism is arranged, the clamping mechanism and the workpiece can be adjusted through the adjusting mechanism, the position of the workpiece with the eccentric position needing to be ground can be adjusted, and repeated clamping is not needed in the machining process.

Description

Technical Field

[0001] This application relates to the field of grinding technology for the end face of cylindrical workpieces, and in particular to a fixture for grinding the end face of cylindrical workpieces. Background Technology

[0002] A fixture is a device used in the mechanical manufacturing process to fix the workpiece in the correct position for construction or inspection.

[0003] Regarding the aforementioned related technologies, the inventors believe that:

[0004] First, most existing clamping structures use two jaws for clamping and fixing, but this method makes workpiece clamping slow, and the angle of the clamping structure needs to be adjusted when picking up and putting down the workpiece, which reduces the processing efficiency.

[0005] Secondly, most lathes currently require multiple clamping operations when machining eccentric parts. This repeated adjustment can affect the surface finish of the workpiece, resulting in a low precision in the grinding of the clamped workpiece. Utility Model Content

[0006] The purpose of this application is to provide a fixture for grinding the end face of a cylindrical workpiece, so as to improve the problem of the impact of multiple clamping on the surface finish of the workpiece.

[0007] The technical solution for a fixture used for grinding the end face of a cylindrical workpiece provided in this application is as follows:

[0008] A fixture for grinding the end face of a cylindrical workpiece includes a base. An adjustment mechanism is fixedly installed on one side of the base, and a clamping mechanism is fixedly installed on the side of the adjustment mechanism opposite to the base. The clamping mechanism includes a housing. A first side gear is rotatably installed on the inner wall of one side of the housing. A second side gear is meshed with the outer surface of the first side gear and rotatably installed between the inner walls of the housing. A rotating plate is fixedly installed on the side of the second side gear opposite to the first side gear. A threaded groove is formed on the side of the rotating plate opposite to the second side gear. A plurality of connecting plates are threadedly inserted into the threaded groove. A plurality of through-type first sliding grooves are formed on one side of the housing. A plurality of connecting plates are movably connected inside the first sliding grooves. A clamping sleeve is fixedly installed on the side of each of the connecting plates opposite to the rotating plate.

[0009] By adopting the above technical solution, the workpiece is placed between three clamping cylinders. Then, the first side gear and the second side gear can drive the rotating plate to rotate. The rotating plate drives the three connecting plates and the three clamping cylinders to move inward through the threaded grooves on its surface to clamp the workpiece and fix it in place.

[0010] Optionally, the adjustment mechanism includes a base, which is fixedly connected to a base. A threaded rod is rotatably installed on the side of the base facing away from the base. A slider is threadedly fitted in the middle of the threaded rod. A fixed plate is fixedly installed on one side of the slider. A second sliding groove is opened on both sides of the base. A sliding plate is slidably installed inside the second sliding groove. Several internal bolts are threaded into both sides of the fixed plate. The internal bolts on the same side pass through the fixed plate and are threadedly connected to the sliding plate.

[0011] By adopting the above technical solution, by turning the second knob, the position of the fixed plate and the clamping mechanism can be adjusted through the threaded rod, thereby adjusting the position of the workpiece that needs to be ground at the eccentric point.

[0012] Optionally, a first knob is fixedly installed on one side of the first side gear, and a through groove is provided on the outer surface of the housing, with the first knob being inserted into the groove.

[0013] By adopting the above technical solution, the first knob can be installed to drive the first side gear to rotate, thereby making it easier to adjust the clamp.

[0014] Optionally, the housing is cylindrical.

[0015] By adopting the above technical solution and through the cylindrical design, the rotating plate can rotate inside the shell, thereby preventing the rotating plate from falling off during operation.

[0016] Optionally, some of the connecting plates are arranged in a ring array.

[0017] By adopting the above technical solution, the connecting plates distributed in a ring array can drive the clamping cylinder to clamp and fix the workpiece at several positions, making the workpiece more secure.

[0018] Optionally, all three clamps are arc-shaped.

[0019] By adopting the above technical solution and using the arc-shaped design, the cylindrical workpiece can be subjected to more force when clamped, thus resulting in a better clamping effect.

[0020] Optionally, the sliding plate is diamond-shaped.

[0021] By adopting the above technical solution and using the diamond-shaped design, it is possible to prevent the sliding plate from falling off during sliding.

[0022] Optionally, a second knob is fixedly installed at one end of the threaded rod, and the second knob is rotatably inserted into one side of the base.

[0023] By adopting the above technical solution, the threaded rod can be adjusted more conveniently through the second knob, thereby improving efficiency.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. This utility model provides a clamping mechanism to fix cylindrical workpieces. The use of several arc-shaped clamps allows for better force distribution on the cylindrical workpieces during fixation, resulting in a better clamping effect.

[0026] 2. This utility model, by setting an adjustment mechanism, can adjust the clamping mechanism and the workpiece through the adjustment structure, and can adjust the position of the workpiece that needs to be ground at the eccentric point, so that the clamping can be repeated during processing. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model.

[0028] Figure 2 This is a schematic diagram of the structure of the novel clamping mechanism.

[0029] Figure 3 This is a schematic diagram of the adjustment mechanism of this utility model.

[0030] In the diagram, 1 is the base; 2 is the clamping mechanism; 3 is the adjusting mechanism; 201 is the groove; 202 is the second side gear; 203 is the threaded groove; 204 is the clamping cylinder; 205 is the housing; 206 is the first knob; 207 is the first slide groove; 208 is the first side gear; 209 is the rotating plate; 210 is the connecting plate; 301 is the second knob; 302 is the second slide groove; 303 is the base; 304 is the sliding plate; 305 is the inner bolt; 306 is the fixing plate; 307 is the slider; and 308 is the threaded rod. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail below.

[0032] A fixture for grinding the end face of a cylindrical workpiece, as shown in the reference. Figure 1 The fixture includes a base 1, which allows the fixture to be mounted on a lathe. An adjustment mechanism 3 is fixedly installed on one side of the base 1, and a clamping mechanism 2 is fixedly installed on one side of the adjustment mechanism 3. The adjustment mechanism 3 can adjust the position of the clamping mechanism 2, thereby allowing the clamping mechanism 2 to be in an eccentric position.

[0033] The clamping mechanism 2 includes a housing 205, a connecting plate 210, and a clamping cylinder 204. The housing 205 is cylindrical, and a through groove 201 is provided on the side of the housing 205. A rotating plate 209 is rotatably installed inside the housing 205. A second side gear 202 is fixedly installed on one side of the rotating plate 209. A first side gear 208 is meshed on one side of the second side gear 202. A first knob 206 is fixedly installed on one side of the first side gear 208. The first knob 206 is rotatably inserted into the groove 201. The first knob 206 can drive the first side gear 208 to rotate, and the first side gear 208 can drive the rotating plate 209 to rotate.

[0034] A threaded groove 203 is provided on the side of the rotating plate 209 facing away from the second gear 202. Three connecting plates 210 arranged in a circular array are threaded inside the threaded groove 203. The three connecting plates 210 penetrate the housing 205. Three through-type first sliding grooves 207 are provided on one side of the housing 205 to cooperate with the sliding of the connecting plates 210. Each of the three connecting plates 210 is fixedly connected to a clamping sleeve 204. The clamping sleeve 204 is arc-shaped, which allows it to better clamp the cylindrical workpiece. When the rotating plate 209 drives the threaded groove 203 to rotate, the connecting plates 210 threaded inside the threaded groove 203 will move. Under the restriction of the first sliding grooves 207, the three connecting plates 210 will drive the clamping sleeve 204 to move towards the center.

[0035] The adjustment mechanism 3 includes a base 303, a threaded rod 308, a sliding plate 304, and a fixed plate 306. The base 303 is fixedly installed on one side of the base 1. The threaded rod 308 is rotatably installed in the middle of the base 303. The outer surface of the threaded rod 308 is threaded with a slider 307. The slider 307 is fixedly connected to the fixed plate 306. The fixed plate 306 is fixedly connected to the housing 205. This allows the threaded rod 308 to drive the clamping mechanism 2 to move through the fixed plate 306, thereby adjusting its position.

[0036] A second knob 301 is fixedly installed on one side of the threaded rod 308. The second knob 301 is rotatably installed on one side of the base 303, and the threaded rod 308 can be rotated by the second knob 301.

[0037] Two internal bolts 305 are threaded into both sides of the fixed plate 306. The internal bolts 305 pass through the fixed plate 306 and are threadedly connected to the sliding plate 304. The fixed plate 306 can drive the sliding plates 304 on both sides to slide. The base 303 has second sliding grooves 302 on both sides. The two sliding plates 304 slide in the two second sliding grooves 302 respectively to improve the stability of the fixed plate 306.

[0038] The implementation principle of this application embodiment is as follows: First, the fixture is fixed on the machining center using the base 1, and the parallelism and perpendicularity of the fixture plane are adjusted using a dial indicator to achieve the required accuracy. The workpiece to be ground is placed between the three clamps 204. Then, the first knob 206 inside the groove 201 is turned. The first knob 206 drives the first side gear 208 to rotate. The first side gear 208 drives the second side gear 202 to rotate. The second side gear 202 drives the rotating plate 209 to rotate inside the housing 205. The rotating plate 209 drives the three connecting plates 210 to move through the threaded groove 203 on it. The three connecting plates 210 move towards the center under the action of the three first sliding grooves 207. The three connecting plates 210 drive the three clamps 204 to move towards the center to fix the workpiece.

[0039] Then, turn the second knob 301 on one side of the base 303. The second knob 301 drives the threaded rod 308 to rotate, the threaded rod 308 drives the slider 307 to rotate, the slider 307 drives the fixed plate 306 to move, and the fixed plate 306 drives the two sliding plates 304 to move through the inner bolt 305. The sliding plates 304 slide in the second slide groove 302 to improve the stability of the fixed plate 306. The fixed plate 306 will drive the clamping mechanism 2 to move to adjust the position of the workpiece so that it can drive the eccentric part of the workpiece to rotate, which is convenient for grinding the eccentric part.

[0040] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fixture for grinding the end face of a cylindrical workpiece, comprising a base (1), characterized in that: An adjustment mechanism (3) is fixedly installed on one side of the base (1), and a clamping mechanism (2) is fixedly installed on the side of the adjustment mechanism (3) facing away from the base (1); The clamping mechanism (2) includes a housing (205). A first side gear (208) is rotatably mounted on the inner wall of one side of the housing (205). A second side gear (202) is meshed with the outer surface of the first side gear (208). The second side gear (202) is rotatably mounted between the inner walls of the housing (205). A rotating plate (209) is fixedly mounted on the side of the second side gear (202) facing away from the first side gear (208). A threaded groove (203) is opened on the side of the rotating plate (209) facing away from the second side gear (202). A plurality of connecting plates (210) are threadedly inserted into the threaded groove (203). A plurality of through-type first sliding grooves (207) are opened on one side of the housing (205). A plurality of connecting plates (210) are slidably connected inside the first sliding grooves (207). A clamp (204) is fixedly mounted on the side of each of the connecting plates (210) facing away from the rotating plate (209).

2. The fixture for grinding the end face of a cylindrical workpiece according to claim 1, characterized in that: The adjustment mechanism (3) includes a base (303), which is fixedly connected to the base (1). A threaded rod (308) is rotatably installed on the side of the base (303) facing away from the base (1). A slider (307) is threadedly sleeved in the middle of the threaded rod (308). A fixing plate (306) is fixedly installed on one side of the slider (307). A second sliding groove (302) is provided on both sides of the base (303). A sliding plate (304) is slidably installed inside the second sliding groove (302). Several internal bolts (305) are threadedly inserted on both sides of the fixing plate (306). The internal bolts (305) on the same side pass through the fixing plate (306) and are threadedly connected to the sliding plate (304).

3. The fixture for grinding the end face of a cylindrical workpiece according to claim 1, characterized in that: A first knob (206) is fixedly installed on one side of the first side gear (208), and a through groove (201) is opened on the outer surface of the housing (205), and the first knob (206) is inserted into the groove (201) by rotation.

4. A fixture for grinding the end face of a cylindrical workpiece according to claim 1, characterized in that: The shell (205) is cylindrical.

5. A fixture for grinding the end face of a cylindrical workpiece according to claim 1, characterized in that: Several of the connecting plates (210) are arranged in a ring array.

6. A fixture for grinding the end face of a cylindrical workpiece according to claim 1, characterized in that: Several of the clamps (204) are arc-shaped.

7. A fixture for grinding the end face of a cylindrical workpiece according to claim 2, characterized in that: The sliding plate (304) is rhomboid in shape.

8. A fixture for grinding the end face of a cylindrical workpiece according to claim 2, characterized in that: A second knob (301) is fixedly installed at one end of the threaded rod (308), and the second knob (301) is rotatably inserted into one side of the base (303).

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