Three-edged needle polishing clamp

Abstract

The utility model relates to the technical field of three-edged needle polishing clamps, in particular to a three-edged needle polishing clamp which comprises an adjusting block installed on the rear side of a clamping block, a clamping mechanism for clamping and fixing a three-edged needle is arranged in the clamping block, and an adjusting mechanism for overturning and adjusting the three-edged needle is arranged in the adjusting block. The electromagnetic ring is electrified, so that the magnetorheological fluid in the rubber air bag is converted from low-viscosity Newtonian fluid into high-viscosity and low-fluidity Bingham fluid along with the enhancement of a magnetic field, the three-edged needle is clamped and fixed, displacement of the three-edged needle is avoided, the gear is driven to rotate by pulling the rack, and the three-edged needle is driven to rotate by pulling the rack. And the electromagnet is powered on, so that repulsive force is generated between the electromagnet and the sliding rod made of the magnetic material, and the clamping plate at the tail end of the sliding rod is pushed to move outwards to clamp and fix the three-edged needle to the center of the rotating cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of triangular needle grinding fixtures, in particular to a triangular needle grinding fixture. Background Art

[0002] For example, the Chinese patent with announcement number CN220637347U discloses a triangular needle grinding fixture, in which a plurality of support tubes are matched with the gear on the support tube to rotate synchronously along the sliding frame. The support tube drives the triangular needles to rotate synchronously through the fixed structure, and the triangular needles are limited by matching the upper fixed groove with the lower fixed groove to improve the stability of the grinder in grinding the triangular needles and improve the qualified rate of triangular needle production.

[0003] However, in the above application, the top spring cooperates with the top plate to drive the guide rod to slide along the guide plate, and the guide rod drives the fixed plate to move through the support plate. The fixed plate cooperates with the arc plate to fix the triangular needle. However, the vibration force generated during grinding will cause the top spring to bounce, thereby driving the triangular needle clamped by it to bounce as well, affecting the stability of grinding and even causing the triangular needle to break. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a triangular needle grinding fixture, which solves the technical problem that the vibration force generated by the existing technology during grinding causes the top spring to bounce and drive the triangular needle to bounce, affecting the stability of grinding, thereby achieving the purpose of improving the stability of grinding.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a triangular needle grinding fixture, comprising an adjusting block installed on the rear side of a clamping block, a clamping mechanism for clamping and fixing the triangular needle is provided inside the clamping block, and an adjusting mechanism for flipping and adjusting the triangular needle is provided inside the adjusting block.

[0006] The clamping mechanism includes a placement hole opened on the clamping block, an electromagnetic ring is installed on the inner wall of the placement hole, a rubber airbag is installed on the inner wall of the electromagnetic ring, and the interior of the rubber airbag is filled with magnetorheological fluid, and an injection component for adding magnetorheological fluid to the rubber airbag is installed on the top of the clamping block.

[0007] Preferably, the injection assembly includes a liquid storage tank installed on the top of the clamping block, and the interior of the liquid storage tank is filled with magnetorheological fluid, suction pumps are symmetrically installed on both sides of the liquid storage tank, and the liquid outlet of the suction pump is installed with an injection tube, and the other end of the injection tube extends into the interior of the rubber airbag.

[0008] Preferably, the adjustment mechanism includes a rotating drum rotatably connected to a hole groove opened on the adjustment block, a gear is installed on the back of the rotating drum, a rack is connected to the tooth groove opened on the adjustment block for sliding left and right, and the rack is meshed with the gear, a positioning component for positioning and clamping triangular needles of different diameters is installed on the rotating drum, and a distance adjustment component for adjusting the distance between the clamping block and the adjustment block is provided between the clamping block and the adjustment block.

[0009] Preferably, the positioning assembly includes a sliding sleeve installed on the rotating drum, the top wall of the sliding sleeve is installed with an electromagnet, the bottom of the electromagnet is installed with an elastic rope, and the bottom of the elastic rope is installed with a sliding rod that slides up and down and is connected to the sliding sleeve, and the end of the sliding rod is installed with a clamping plate.

[0010] Preferably, the sliding rod is made of magnetic material, and the clamping plate is an arc-shaped structure.

[0011] Preferably, the distance adjustment component includes an electric push rod installed on the back of the clamping block, and the free end of the electric push rod is connected to the adjustment block. Limiting holes are symmetrically opened on the left and right sides of the adjustment block, and limiting rods are symmetrically installed on the left and right sides of the clamping block and are connected to the limiting holes in a forward and backward sliding manner.

[0012] By means of the above technical solution, the utility model provides a triangular needle grinding fixture, which has at least the following beneficial effects:

[0013] 1. The utility model energizes the electromagnetic ring, so that the magnetorheological fluid inside the rubber airbag is transformed from a low-viscosity Newtonian fluid to a high-viscosity, low-fluidity Bingham fluid as the magnetic field increases, thereby firmly clamping the triangular needle inside the placement hole to prevent the triangular needle from moving during grinding and affecting the grinding process.

[0014] 2. The utility model drives the gear to rotate by pulling the rack, and then drives the triangular needle with the tail abutting against the inside of the rotating drum to rotate, thereby grinding different surfaces of the triangular needle and improving the grinding efficiency.

[0015] 3. The utility model generates a repulsive force between the electromagnet and the slide bar made of magnetic material by energizing the electromagnet, pushing the clamping plate at the end of the slide bar to move outward to clamp the triangular needle and fix it in the center of the rotating drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0017] In the attached figure:

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the independent split structure of the clamping mechanism of the utility model;

[0020] Figure 3 This is a schematic diagram of the independent rear-view structure of the adjustment mechanism of the utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the positioning component of the utility model;

[0022] Figure 5 This is a schematic diagram of the independent split structure of the distance adjustment component of the utility model.

[0023] In the figure: 1. Clamping block; 2. Adjusting block; 3. Clamping mechanism; 301. Placement hole; 302. Electromagnetic ring; 303. Rubber airbag; 304. Liquid injection assembly; 3041. Liquid storage tank; 3042. Suction pump; 3043. Liquid injection pipe; 4. Adjusting mechanism; 401. Rotating drum; 402. Gear; 403. Rack; 404. Positioning assembly; 4041. Sleeve; 4042. Electromagnet; 4043. Elastic rope; 4044. Sliding rod; 4045. Clamping plate; 405. Distance adjustment assembly; 4051. Electric push rod; 4052. Limit hole; 4053. Limit rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example 1

[0026] Based on the problem that the vibration force generated by the existing prior art during grinding will cause the top spring to bounce and drive the triangular needle to bounce, affecting the stability of grinding, this embodiment provides a triangular needle grinding fixture, please refer to Figure 1-Figure 5 The embodiment provides a triangular needle grinding fixture that can improve the stability of grinding. The triangular needle grinding fixture includes an adjustment block 2 installed on the rear side of a clamping block 1. The clamping block 1 is provided with a clamping mechanism 3 for clamping and fixing the triangular needle. The adjustment block 2 is provided with an adjustment mechanism 4 for flipping and adjusting the triangular needle. The clamping mechanism 3 is used to clamp and fix the triangular needle to prevent it from rotating and displacing during grinding, which would affect the grinding process. The adjustment mechanism 4 is used to drive the triangular needle to rotate, thereby facilitating the grinding of different surfaces of the triangular needle.

[0027] Since the vibration force generated by the existing technology during grinding will cause the top spring to bounce and drive the triangular needle to bounce, affecting the stability of grinding, the device is provided with a clamping mechanism 3, which includes a placement hole 301 opened on the clamping block 1, and an electromagnetic ring 302 is installed on the inner wall of the placement hole 301, and a rubber airbag 303 is installed on the inner wall of the electromagnetic ring 302, and the interior of the rubber airbag 303 is filled with magnetorheological fluid, and an injection component 304 for injecting magnetorheological fluid into the rubber airbag 303 is installed on the top of the clamping block 1. The triangular needle is inserted into the placement hole 301 and the needle tip is leaked out. At this time, the electromagnetic ring 302 is energized, so that the magnetorheological fluid inside the rubber airbag 303 is transformed from a low-viscosity Newtonian fluid to a high-viscosity, low-fluidity Bingham fluid as the magnetic field increases, thereby firmly clamping the triangular needle inside the placement hole 301 to avoid displacement of the triangular needle during grinding and affecting the grinding process.

[0028] Since the rubber airbag 303 with limited internal magnetorheological fluid cannot adaptively clamp and fix triangular needles of different diameters, the device is also provided with an injection component 304, which includes a liquid storage tank 3041 installed on the top of the clamping block 1, and the interior of the liquid storage tank 3041 is infused with magnetorheological fluid, and suction pumps 3042 are symmetrically installed on both sides of the liquid storage tank 3041. The liquid outlet of the suction pump 3042 is installed with an injection tube 3043, and the other end of the injection tube 3043 extends into the interior of the rubber airbag 303. When the suction pump 3042 is started, the magnetorheological fluid inside the liquid storage tank 3041 is pumped into the interior of the injection tube 3043 and injected into the rubber airbag 303, so that the rubber airbag 303 wraps triangular needles of different diameters inside the placement hole 301, thereby adapting to triangular needles of different diameters and improving the applicability of the device.

[0029] Simply relying on the clamping mechanism 3 to fix the triangular needle cannot drive the triangular needle to rotate, so as to grind its different surfaces. Therefore, the device is also provided with an adjusting mechanism 4, which includes a rotating drum 401 rotatably connected to the hole groove opened on the adjusting block 2, and a gear 402 is installed on the back of the rotating drum 401. A rack 403 is connected to the tooth groove opened on the adjusting block 2 for sliding left and right, and the rack 403 is meshed with the gear 402. A positioning component 404 for positioning and clamping triangular needles of different diameters is installed on the rotating drum 401, and a distance adjustment component 405 for adjusting the distance between the clamping block 1 and the adjusting block 2 is provided. Pulling the rack 403 drives the gear 402 to rotate, and then drives the triangular needle with its tail abutting against the rotating drum 401 to rotate, so as to grind different surfaces of the triangular needle, thereby improving the grinding efficiency.

[0030] The lengths of triangular needles of different diameters are also different. Therefore, in order to avoid the front end of the longer triangular needle being exposed too much to the outside and causing it to break during grinding, the device is also provided with a distance adjustment component 405. The distance adjustment component 405 includes an electric push rod 4051 installed on the back of the clamping block 1, and the free end of the electric push rod 4051 is connected to the adjustment block 2. The limiting holes 4052 are symmetrically provided on the left and right sides of the adjustment block 2. The limiting rods 4053 that are symmetrically installed on the left and right sides of the clamping block 1 and are connected to the limiting holes 4052 in a forward and backward sliding manner are installed. The electric push rod 4051 is started to push the adjustment block 2 through the limiting hole 4052 and move backward along the limiting rod 4053 until the distance between the clamping block 1 and the adjustment block 2 matches the length of the triangular needle, thereby better clamping and fixing the triangular needle.

[0031] Example 2

[0032] On the basis of Example 1, Figure 1-Figure 5 As shown, since triangular needles of different diameters will fall to the bottom of the placement hole 301 and the rotating drum 401 when placed inside the placement hole 301 and the rotating drum 401, instead of being fixed in the center position of the two, when the triangular needle is flipped over to grind its different surfaces, the triangular needle may be slightly displaced. Therefore, the device is also provided with a positioning component 404, and the positioning component 404 includes a sliding sleeve 4041 installed on the rotating drum 401, and an electromagnet 4042 is installed on the top wall of the sliding sleeve 4041, and an elastic rope 4043 is installed at the bottom of the electromagnet 4042, and a sliding rod 4044 is installed at the bottom of the elastic rope 4043, which is slidably connected to the sliding sleeve 4041, and a clamping plate 4045 is installed at the end of the sliding rod 4044. The slide bar 4044 is made of magnetic material, and the clamping plate 4045 is an arc-shaped structure. After the triangular needles of different diameters are inserted into the interior of the rotating drum 401, the electromagnet 4042 is energized, thereby generating a repulsive force between the electromagnet 4042 and the slide bar 4044 made of magnetic material, pushing the clamping plate 4045 at the end of the slide bar 4044 outward to clamp the triangular needle and fix it in the center of the rotating drum 401.

[0033] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A triangular needle grinding fixture, comprising an adjusting block (2) mounted on the rear side of a clamping block (1), characterized in that: A clamping mechanism (3) for clamping and fixing the triangular needle is provided inside the clamping block (1), and an adjusting mechanism (4) for flipping and adjusting the triangular needle is provided inside the adjusting block (2); The clamping mechanism (3) comprises a placement hole (301) formed on a clamping block (1); an electromagnetic ring (302) is mounted on the inner wall of the placement hole (301); a rubber airbag (303) is mounted on the inner wall of the electromagnetic ring (302); the interior of the rubber airbag (303) is filled with magnetorheological fluid; and a liquid injection component (304) for injecting magnetorheological fluid into the rubber airbag (303) is mounted on the top of the clamping block (1).

2. The triangular needle grinding fixture according to claim 1, characterized in that: The injection assembly (304) comprises a liquid storage tank (3041) mounted on the top of the clamping block (1), wherein the interior of the liquid storage tank (3041) is filled with magnetorheological fluid, and suction pumps (3042) are symmetrically mounted on both sides of the liquid storage tank (3041), and a liquid injection pipe (3043) is mounted at the liquid outlet of the suction pump (3042), and the other end of the liquid injection pipe (3043) extends into the interior of the rubber airbag (303).

3. The triangular needle grinding fixture according to claim 1, characterized in that: The adjustment mechanism (4) comprises a rotating drum (401) rotatably connected to a hole slot provided on the adjustment block (2); a gear (402) is mounted on the back of the rotating drum (401); a rack (403) is slidably connected to the tooth slot provided on the adjustment block (2) in the left and right directions, and the rack (403) is meshedly connected to the gear (402); a positioning assembly (404) for positioning and clamping triangular needles of different diameters is mounted on the rotating drum (401); and a distance adjustment assembly (405) for adjusting the distance between the clamping block (1) and the adjustment block (2) is provided between the clamping block (1) and the adjustment block (2).

4. The triangular needle grinding fixture according to claim 3, characterized in that: The positioning assembly (404) comprises a sliding sleeve (4041) mounted on the rotating drum (401), an electromagnet (4042) being mounted on the top wall of the sliding sleeve (4041), an elastic rope (4043) being mounted on the bottom of the electromagnet (4042), and a sliding rod (4044) being mounted on the bottom of the elastic rope (4043) and being connected to the sliding sleeve (4041) by sliding up and down, and a clamping plate (4045) being mounted on the end of the sliding rod (4044).

5. The triangular needle grinding fixture according to claim 4, characterized in that: The sliding rod (4044) is made of magnetic material, and the clamping plate (4045) is an arc-shaped structure.

6. The triangular needle grinding fixture according to claim 3, characterized in that: The distance adjustment assembly (405) comprises an electric push rod (4051) mounted on the back of the clamping block (1), and the free end of the electric push rod (4051) is connected to the adjustment block (2). The adjustment block (2) has symmetrically provided limit holes (4052) on the left and right sides, and the clamping block (1) has symmetrically provided limit rods (4053) slidably connected to the limit holes (4052) on the left and right sides.

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