CN219704572U - Clamp for finish machining of ultra-high hardness alloy drill bit - Google Patents

Abstract

The utility model discloses a clamp for finish machining of an ultra-high hardness alloy drill bit, which comprises a support rod movably mounted on a grinding machine, wherein a fixing ring for fixing a bar is rotatably arranged on the support rod, a plurality of first wedges are movably arranged on the fixing ring, and the first wedges are driven to relatively move so as to clamp the bar. According to the clamp for finish machining of the ultra-high hardness alloy drill bit, when the bar is polished into the drill bit by the grinding machine, one end of the bar is fixed on the grinding machine, the supporting rod is pushed to move, the second end of the bar is located in the fixing ring, at the moment, the plurality of first wedges are driven to be close to the center of the fixing ring and clamped on the second end of the bar, at the moment, both ends of the bar are supported, and when the grinding machine drives the bar to rotate, the fixing ring can also rotate relative to the supporting rod, so that the bar can be polished by the grinding machine conveniently.

Description

Clamp for finish machining of ultra-high hardness alloy drill bit

Technical Field

The utility model relates to the technical field of drill bit machining, in particular to a clamp for finish machining of an ultra-high hardness alloy drill bit.

Background

The drill bit is a common engineering apparatus and is mainly used for punching, and in order to ensure punching efficiency and service life of the drill bit, the drill bit is mostly manufactured by using high-hardness alloy.

According to publication (bulletin) No. CN110000589A, publication (bulletin) No. 2019.07.1, a drill bit fixture for numerical control machining is disclosed, which comprises a chuck, the bottom welding of chuck has an upper clamping cylinder, one side movable joint of upper clamping cylinder bottom has movable lockpin, the bottom of upper clamping cylinder surface is equipped with down clamping cylinder, and goes up through movable lockpin fixed joint between clamping cylinder and the upper clamping cylinder, be equipped with annular latex dust separation membrane on the inner wall of lower clamping cylinder, and the bottom annular array of lower clamping cylinder has arranged three sets of centre of a circle locating lever, the inner chamber movable joint of lower clamping cylinder has the drill bit, and the bottom of drill bit runs through and extends to the bottom of lower clamping cylinder. The device is through last card section of thick bamboo, lower card section of thick bamboo and the setting of magnetorheological fluid thereof, the solid-liquid state of magnetorheological fluid is adjusted to the card section of thick bamboo under the rotation that can be nimble to quick change drill bit of different specifications, compare with current spanner formula drill chuck, need not just can change the drill bit with the help of other instrument, dismouting efficiency is higher, can not appear wearing and tearing in the in-process of long-term use moreover, can not appear skidding not hard up condition when changing the drill bit, the security when using is higher.

In the prior art including above-mentioned patent, when making the high hardness alloy drill bit, need use the grinding machine, the pivoted sanding block contacts with the rod on the grinding machine to polish out the recess on the rod, and the grinding machine can drive the rod rotation, makes its cooperation sanding block, polishes out heliciform slot on the rod, so that punch the work. However, when the length of the drill bit is relatively long, the grinding block contacts the drill bit and presses the drill bit when grinding the part far away from the drill bit clamping point, so that the drill bit is easy to bend, and the use is affected.

Disclosure of Invention

The utility model aims to provide a clamp for finish machining of an ultra-high hardness alloy drill bit, and aims to solve the problem that a grinding block easily bends the drill bit and influences use when grinding the drill bit.

In order to achieve the above purpose, the utility model provides a fixture for finish machining of an ultra-high hardness alloy drill bit, which comprises a support rod movably mounted on a grinding machine, wherein a fixing ring for fixing a bar is rotatably arranged on the support rod, a plurality of first wedges are movably arranged on the fixing ring, and the first wedges are driven to relatively move so as to clamp the bar.

Preferably, the bottom of the supporting rod is provided with a tenon block.

Preferably, a tongue-and-groove matched with the tongue block is formed in the liquid collecting groove of the grinding machine.

Preferably, the support rod is movably provided with a limiting ring for limiting the movement of the fixing ring.

Preferably, the fixing ring is movably provided with a second wedge block for pushing the first wedge block to move.

Preferably, the second wedge is rotatably provided with a bolt extending to the outside of the fixing ring.

Preferably, a threaded fit exists between the retaining ring and the bolt.

Preferably, a plurality of movable rods are arranged between the support rods and the grinding machine.

Preferably, a plurality of said movable bars are combined to form a frame and provided with a sieve for filtering debris.

In the technical scheme, the clamp for finish machining of the ultra-high hardness alloy drill bit provided by the utility model has the following beneficial effects: when the rod is polished into a drill bit by the grinding machine, one end of the rod is fixed on the grinding machine, the supporting rod is pushed to move, the second end of the rod is positioned in the fixing ring, the plurality of first wedges are driven to be close to the center of the fixing ring and clamped at the second end of the rod, both ends of the rod are supported at the moment, and when the grinding machine drives the rod to rotate, the fixing ring can also rotate relative to the supporting rod, so that the rod can be polished by the grinding machine conveniently.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of the overall structure provided by an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an internal structure according to an embodiment of the present utility model;

fig. 3 is an enlarged view at a in fig. 2.

Reference numerals illustrate:

1. a support rod; 11. a fixing ring; 111. a second wedge; 112. a bolt; 12. a first wedge; 13. tenon blocks; 14. a limiting ring; 15. a movable rod; 151. a filter screen; 2. grinding machine; 21. a liquid collecting tank.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

As shown in fig. 1-3, the fixture for finish machining of the ultra-high hardness alloy drill bit comprises a supporting rod 1 movably mounted on a grinding machine 2, a fixing ring 11 for fixing bars is rotatably arranged on the supporting rod 1, a plurality of first wedges 12 are movably arranged on the fixing ring 11, and the plurality of first wedges 12 are driven to relatively move so as to clamp the bars.

In the above technical scheme, when the rod is polished into the drill bit by utilizing the grinding machine 2, one end of the rod is fixed on the grinding machine 2, the supporting rod 1 is pushed to move, the second end of the rod is positioned in the fixed ring 11, a plurality of first wedges 12 are driven to be close to the center of the fixed ring 11 at the moment and clamped on the second end of the rod, at the moment, both ends of the rod are supported, and when the grinding machine 2 drives the rod to rotate, the fixed ring 11 can also rotate relative to the supporting rod 1, so that the rod can be polished by the grinding machine 2 conveniently.

As an embodiment of the present utility model, as shown in fig. 1, a tenon 13 is disposed at the bottom of the support rod 1, a mortise adapted to the tenon 13 is disposed on a liquid collecting groove 21 (for collecting cutting liquid) of the grinding machine 2, and the tenon 13 is engaged with the mortise to limit a movement path of the support rod 1, so that a bar fixed to the grinding machine 2 can be aligned to the center of the fixing ring 11.

As still another embodiment of the present utility model, as shown in fig. 2-3, the support rod 1 is movably provided with a stop ring 14 for limiting the movement of the fixing ring 11, the stop ring 14 can limit the fixing ring 11, prevent the fixing ring 11 from being separated from the support rod 1, and a ball is disposed between the stop ring 14 and the fixing ring 11, so that the fixing ring 11 rotates relative to the stop ring 14.

As still another embodiment of the present utility model, as shown in fig. 2-3, a second wedge 111 for pushing the first wedge 12 to move is movably disposed on the fixed ring 11, the inclined surface of the first wedge 12 abuts against the inclined surface of the second wedge 111, a bolt 112 extending to the outside of the fixed ring 11 is rotatably disposed on the second wedge 111, and a threaded fit exists between the fixed ring 11 and the bolt 112; when the second end of the bar is fixed, the bolts 112 are respectively rotated, the bolts 112 move along the thread lines on the fixed ring 11, and the second wedge 111 is pushed to move inside the fixed ring 11, and the second wedge 111 pushes the first wedge 12 to be close to the center of the fixed ring 11 so as to clamp the bar.

Further, as shown in fig. 1, a plurality of movable rods 15 are arranged between the supporting rod 1 and the grinding machine 2, the plurality of movable rods 15 are combined to form a frame and a filter screen 151 for filtering scraps is arranged, the movable rods 15 are rotationally connected with the grinding machine 2, the movable rods 15 are connected with the supporting rod 1 and the movable rods 15, when the supporting rod 1 moves, the shape of the frame formed by the plurality of movable rods 15 is changed, so that cutting fluid can always fall into the filter screen 151 on the frame, when a bar is ground, the grinding machine 2 sprays cutting fluid to the contact part of the grinding block and the bar, the grinding block and the bar are cooled, and meanwhile, the cutting fluid can take away the scraps ground by the grinding block, the cutting fluid enters the filter screen 151 with the scraps, and the filter screen 151 filters the scraps so that the cutting fluid can be reused.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims (9)

1. The fixture for finish machining of the ultra-high hardness alloy drill bit is characterized by comprising a supporting rod (1) movably mounted on a grinding machine (2), wherein a fixing ring (11) for fixing a bar is rotatably arranged on the supporting rod (1), a plurality of first wedges (12) are movably arranged on the fixing ring (11), and the first wedges (12) are driven to move relatively to clamp the bar.

2. The clamp for finishing the ultra-high hardness alloy drill bit according to claim 1, wherein the bottom of the supporting rod (1) is provided with a tenon block (13).

3. The clamp for finishing the ultra-high hardness alloy drill bit according to claim 2, wherein a tongue-and-groove matched with the tongue block (13) is formed in a liquid collecting groove (21) of the grinding machine (2).

4. The clamp for finishing the ultra-high hardness alloy drill bit according to claim 1, wherein a limiting ring (14) for limiting the movement of the fixing ring (11) is movably arranged on the supporting rod (1).

5. The clamp for finishing the ultra-high hardness alloy drill bit according to claim 1, wherein a second wedge block (111) for pushing the first wedge block (12) to move is movably arranged on the fixed ring (11).

6. The fixture for finishing an ultra-high hardness alloy drill according to claim 5, wherein the second wedge (111) is rotatably provided with a bolt (112) extending to the outside of the fixing ring (11).

7. The clamp for finishing an ultra-high hardness alloy drill bit according to claim 6, characterized in that there is a threaded fit between the fixing ring (11) and the bolt (112).

8. The fixture for finishing an ultra-high hardness alloy drill bit according to claim 1, wherein a plurality of movable rods (15) are provided between the support rod (1) and the grinding machine (2).

9. The clamp for finishing an ultra-high hardness alloy drill bit according to claim 8, characterized in that a plurality of the movable rods (15) are combined to form a frame and provided with a filter screen (151) for filtering chips.