CN213411241U - Weld joint milling clamp - Google Patents

Abstract

The utility model discloses a mill welding seam anchor clamps, it relates to bit leg processing technology field. The technical scheme is characterized by comprising a limiting support assembly, a positioning assembly and a jacking assembly, wherein the positioning assembly comprises a positioning block, a positioning surface is arranged on the positioning block, and a positioning pin capable of protruding out of the positioning surface is arranged in the positioning block. The utility model discloses can carry out circumference location to the bit leg, improve centre gripping positioning accuracy and processingquality.

Description

Weld joint milling clamp

Technical Field

The utility model relates to a bit leg processing technology field, more specifically say, it relates to a mill welding seam anchor clamps.

Background

The weld seam of the bit leg is used for connecting and assembling three bit legs of the roller bit, the conventional processing method is to process the bit leg on a special rotary table, the back of the bit leg is downward, the 120-degree surface of the bit leg and the end surface of the screw thread are positioned, and an oil cylinder is used for propping against the shoulder of the back of the bit leg. Because the 120-degree face of the palm is upward, the palm is positioned by the screw thread end face in the horizontal direction, when the palm is installed, both hands are required to support the palm and apply upward and horizontal forces, and especially for large-size palms, the installation difficulty is very high. When the palm is installed, the attaching condition of the 120-degree surface and the end face of the screw thread and the position of the oil cylinder are inconvenient to observe, so that great potential safety hazards exist, and fingers are injured by the top of the oil cylinder.

The existing Chinese patent with the publication number of CN111347273A discloses a cone bit is with palm finish milling location clamping device, which comprises a bottom plate, locate the relative position on the bottom plate be used for the U type subassembly of the axle journal position of centre gripping palm and be used for supporting the wedge block subassembly of the tail terminal surface of palm, and locate the movable block subassembly that is used for supporting the palm back position of palm between U type subassembly and the wedge block subassembly, U type subassembly is including dismantling the elastic plate of connecting bottom plate and elastic support axle journal bottom and the U template of the periphery of slant card income axle journal, the wedge block subassembly includes the base that sets up along bottom plate horizontal migration, with base top sliding fit's wedge, locate the reticulation pressure nail of wedge block side, the movable block subassembly includes the positioning seat, but embedding horizontal migration's movable block in the positioning seat.

Clamping device in the above-mentioned patent has changed the centre gripping mode to the bit leg, but behind the U template was gone into to the axle journal position card of bit leg, the bit leg can also rotate around the axis at axle journal position, and the axis of rotation perpendicular to movable block and the contact surface of bit leg, so U type subassembly and movable assembly cooperation still can't restrict the rotation of bit leg, can't carry out circumference spacing to the bit leg promptly, and then influence processingquality. Meanwhile, the wedge-shaped block moves and compresses tightly through the bolt, but the bolt is loosened due to vibration in the process of machining in the compression mode, so that equipment damage and workpiece scrapping are caused.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a mill welding seam anchor clamps, it has the advantage that improves centre gripping positioning accuracy and centre gripping reliability.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a mill welding seam anchor clamps, includes spacing supporting component, locating component and top tight subassembly, locating component includes the locating piece, be provided with the locating surface on the locating piece, be provided with in the locating piece can protrusion in the locating pin of locating surface.

Further, the axis of the positioning pin is perpendicular to the positioning surface.

Furthermore, a positioning hole matched with the positioning pin is formed in the positioning block, and the positioning pin can slide in the positioning hole to be concave to the positioning surface; the positioning block is provided with a limiting piece, and the limiting piece can enable the positioning pin to be kept in a state of protruding out of the positioning surface.

Further, the limiting piece is a spring arranged in the positioning hole.

Furthermore, a position yielding opening communicated with the positioning hole is formed in the side wall of the positioning block, and a shifting rod penetrating through the position yielding opening is arranged on the side wall of the positioning pin.

Further, the jacking assembly comprises a fixed seat, a driving device and a fixed block are arranged on the fixed seat, an ejector rod is arranged on the fixed block, and the driving device can control the ejector rod to move along the axial direction of the ejector rod.

Further, the driving device is an oil cylinder.

Further, the fixed block includes first fixed block and with the second fixed block that first fixed block is connected, form between first fixed block and the second fixed block with ejector pin complex fixed orifices and with the crack of fixed orifices intercommunication, it is equipped with the locking bolt that passes to revolve between first fixed block and the second fixed block the crack.

Further, the first fixing block is connected with the fixing seat, and a fixing groove matched with the first fixing block is formed in the fixing seat.

Further, spacing supporting component includes PMKD and with the support swash plate that PMKD connects, be provided with the spacing draw-in groove that is the V type on the support swash plate.

To sum up, the utility model discloses following beneficial effect has:

1. the positioning pin can limit the rotation of the bit leg, so that circumferential positioning is realized, and the clamping and positioning precision and the processing quality are improved;

2. the oil cylinder is used as a driving device to tightly push the bit leg, the pressure is reliable, and the stability of the bit leg can be improved;

3. utilize the utility model discloses an anchor clamps can merge the processing of accomplishing 120 faces of bit leg and welding seam, adopts standard four-axis revolving stage, and the part subassembly of anchor clamps also can be changed simultaneously, processes other positions of bit leg, improve equipment utilization rate.

Drawings

FIG. 1 is a schematic view of a weld milling fixture in an embodiment in use;

FIG. 2 is a schematic overall structure diagram of the weld milling fixture in the embodiment;

FIG. 3 is an exploded view of the positioning assembly of the embodiment;

FIG. 4 is a schematic structural diagram of a tightening assembly in the embodiment;

FIG. 5 is a schematic structural diagram of a bit leg in the embodiment.

In the figure: 1. a bridge plate; 11. positioning a groove; 2. a bit leg; 21. a journal; 22. palm back; 23. a reference plane; 24. a reference positioning hole; 25. a shoulder; 26. a threaded shank portion; 3. a limiting support component; 31. fixing the bottom plate; 32. supporting the inclined plate; 33. a limiting clamping groove; 4. a positioning assembly; 41. positioning the bottom plate; 411. an adjustment groove; 412. positioning the sliding block; 42. positioning a vertical plate; 421. positioning holes; 422. a let position port; 43. positioning the bolt; 44. positioning the surface; 45. positioning pins; 451. a deflector rod; 46. a spring; 5. jacking the assembly; 51. a fixed seat; 511. fixing grooves; 52. an oil cylinder; 531. a first fixed block; 532. a second fixed block; 533. a fixing hole; 534. performing crack filling; 535. locking the bolt; 54. a top rod; 541. and (4) a tip.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Example (b):

a kind of milling weld fixture, refer to fig. 1, fig. 2 and fig. 5, it includes spacing support assembly 3, locating component 4 and supports the assembly 5 tightly, this fixture is applied to the standard four-axis revolving stage, and the three are installed on bridge plate 1 of the standard four-axis revolving stage; the positioning assembly comprises a positioning block, a positioning surface 44 is arranged on the positioning block, and a positioning pin 45 capable of protruding out of the positioning surface 44 is arranged in the positioning block; the fixture of the utility model is used for clamping and positioning the bit leg 2, wherein the bit leg 2 comprises a shaft neck 21, a leg back 22, a shoulder 25 and a screw thread handle 26, a reference surface 23 for processing the shaft neck 21 is arranged on the leg back 22, a reference positioning hole 24 is arranged on the reference surface 23, and a positioning pin 45 is matched with the reference positioning hole 24; the positioning pin 45 is matched with the reference positioning hole 24 to limit the rotation of the bit leg 2, so that circumferential positioning is realized, the clamping and positioning precision is improved, and the processing quality is ensured.

Referring to fig. 1 to 3, the axis of the positioning pin 45 in the present embodiment is perpendicular to the positioning surface 44, which facilitates the machining of the reference positioning hole 24; the positioning block comprises a positioning bottom plate 41 and a positioning vertical plate 42, the positioning bottom plate 41 and the positioning vertical plate 42 are integrally formed, and a positioning surface 44 is arranged on the positioning vertical plate 42; as for the positioning pin 45, if it is fixed relative to the positioning riser 42, although it does not affect the positioning effect, it is not favorable for the assembly of the bit leg 2, so it is preferable to make the positioning pin 45 telescopic.

Referring to fig. 2 and 3, specifically, a positioning hole 421 matched with the positioning pin 45 is formed in the positioning vertical plate 42, and the positioning pin 45 can slide in the positioning hole 421 to be concave to the positioning surface 44; a limiting member is arranged on the positioning vertical plate 42, and the limiting member can keep the positioning pin 45 in a state of protruding from the positioning surface 44, and in the embodiment, the limiting member is a spring 46 arranged in the positioning hole 421; the spring 46 can enable the positioning pin 45 to protrude out of the positioning surface 44, and meanwhile, the positioning pin 45 can stretch and retract; the side wall of the positioning vertical plate 42 is provided with a yielding hole 422 communicated with the positioning hole 421, and the side wall of the positioning pin 45 is provided with a driving lever 451 penetrating through the yielding hole 422; the positioning pin 45 can be moved to be concave to the positioning surface 44 by pressing the shifting lever 451, and after the shifting lever 451 is released, the positioning pin 45 is reset to be convex to the positioning surface 44 under the elastic force of the spring 46, so that the assembly is convenient; in other alternative embodiments, the limiting member may also be a stopper inserted into a sidewall of the positioning vertical plate 42, the stopper is inserted into the positioning vertical plate 42, the bottom end of the positioning pin 45 contacts with the stopper to protrude from the positioning surface 44, and after the stopper is pulled out, the positioning pin 45 slides down to contact with the bottom end of the positioning hole 421 and then is recessed into the positioning surface 44.

Referring to fig. 2 and 3, the bridge plate 1 is provided with a positioning groove 11 arranged along the length direction thereof, and the bottom wall of the positioning bottom plate 41 is provided with a positioning slider 412 embedded in the positioning groove 11, so that the positioning block can perform directional movement along the positioning groove 11; an adjusting groove 411 is formed in the positioning bottom plate 41, and a positioning bolt 43 connected with the bridge plate 1 penetrates through the adjusting groove 411; after the positioning block is moved to a proper position along the positioning groove 11, the positioning block can be fastened by screwing the positioning bolt 43, so that the position of the positioning block can be conveniently adjusted.

Referring to fig. 2 and 4, the tightening assembly 5 includes a fixed seat 51 connected to the bridge plate 1, a driving device and a fixed block are disposed on the fixed seat 51, a push rod 54 is disposed on the fixed block, and the driving device can control the push rod 54 to move along the axial direction thereof; in the embodiment, the driving device is an oil cylinder 52, a piston of the oil cylinder 52 is in contact with the end of the push rod 54, and in other alternative embodiments, the oil cylinder 52 can be replaced by an air cylinder or a linear motor.

Referring to fig. 4 and 5, the fixing block includes a first fixing block 531 and a second fixing block 532, and the first fixing block 531 and the second fixing block 532 are integrally formed in this embodiment; a fixing hole 533 matched with the mandril 54 and a gap 534 communicated with the fixing hole 533 are formed between the first fixing block 531 and the second fixing block 532, and a locking bolt 535 penetrating through the gap 534 is screwed between the first fixing block 531 and the second fixing block 532; the push rod 54 and the fixed block can be tightly pressed through the locking bolt 535, the stability of the push rod 54 is improved, and the vibration of the push rod 54 in the processing process is reduced; the tip 541 is arranged on the end face of the ejector rod 54, and when the ejector rod 54 pushes the end face of the threaded handle part 26, the tip 541 can be embedded in the end face of the threaded handle part 26, so that the bit leg 2 is prevented from deviating in the machining process, and the machining quality is improved; the first fixing block 531 is connected with the fixing seat 51 through bolts, a fixing groove 511 matched with the first fixing block 531 is formed in the side wall of the fixing seat 51, and the fixing groove 511 plays a limiting role in limiting the fixing block and prevents the fixing block from moving transversely.

Referring to fig. 1, 2 and 5, the limiting support component 3 includes a fixed base plate 31 and a supporting inclined plate 32 connected to the fixed base plate 31, an included angle is formed between the supporting inclined plate 32 and the fixed base plate 31, a V-shaped limiting slot 33 is disposed on the supporting inclined plate 32, and the limiting slot 33 is used for being connected to the journal 21.

Claims (10)

1. The utility model provides a mill welding seam anchor clamps, includes spacing supporting component, locating component and the tight subassembly in top, locating component includes the locating piece, be provided with locating surface on the locating piece, its characterized in that: and a positioning pin capable of protruding out of the positioning surface is arranged in the positioning block.

2. The weld milling fixture of claim 1, wherein: the axis of the positioning pin is perpendicular to the positioning surface.

3. The weld milling fixture of claim 1, wherein: a positioning hole matched with the positioning pin is formed in the positioning block, and the positioning pin can slide in the positioning hole to be concave to the positioning surface; the positioning block is provided with a limiting piece, and the limiting piece can enable the positioning pin to be kept in a state of protruding out of the positioning surface.

4. The weld milling fixture of claim 3, wherein: the limiting part is a spring arranged in the positioning hole.

5. The weld milling fixture of claim 4, wherein: the side wall of the positioning block is provided with a position yielding opening communicated with the positioning hole, and the side wall of the positioning pin is provided with a deflector rod penetrating through the position yielding opening.

6. The weld milling fixture according to any one of claims 1 to 5, wherein: the jacking assembly comprises a fixed seat, a driving device and a fixed block are arranged on the fixed seat, an ejector rod is arranged on the fixed block, and the driving device can control the ejector rod to move along the axial direction of the ejector rod.

7. The weld milling fixture of claim 6, wherein: the driving device is an oil cylinder.

8. The weld milling fixture of claim 6, wherein: the fixed block include first fixed block and with the second fixed block that first fixed block is connected, form between first fixed block and the second fixed block with ejector pin complex fixed orifices and with the crack of fixed orifices intercommunication, it is equipped with soon between first fixed block and the second fixed block and passes the locking bolt of crack.

9. The weld milling fixture of claim 8, wherein: the first fixing block is connected with the fixing seat, and a fixing groove matched with the first fixing block is formed in the fixing seat.

10. The weld milling fixture according to any one of claims 1 to 5, wherein: the limiting support assembly comprises a fixed base plate and a support inclined plate connected with the fixed base plate, and a V-shaped limiting clamping groove is formed in the support inclined plate.

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