CN211028205U - Drilling clamp - Google Patents

Abstract

The utility model relates to a boring grab, boring grab are including having loading end base, clamping component and axial positioning subassembly. One side of the base, which is provided with a bearing surface, is provided with a clamping part for placing the shaft workpiece. The clamping assembly comprises a bracket and a pressing block. The support is arranged on the bearing surface. The pressing block is arranged at the position of the bracket opposite to the clamping part. The pressing block can stretch and retract along a first direction vertical to the bearing surface. The axial positioning assembly comprises a support seat arranged on the bearing surface and a tip arranged on one side of the support seat facing the clamping part. The support and the clamping part are arranged at intervals in a second direction perpendicular to the first direction. The mount is slidable in a second direction. The tip is slidable in a first direction. Therefore, the drilling clamp can clamp shaft workpieces with different lengths and different outer diameters, and has high applicability.

Description

Drilling clamp

Technical Field

The utility model relates to an axle type work piece drilling processing technology field especially relates to a boring grab.

Background

In the field of mechanical manufacturing, a shaft workpiece of many products needs to be drilled, for example, an axial threaded hole is drilled on the end face of one end of a gear shaft of a transmission. When needs are drilled on the shaft type workpiece, in order to improve the stability and the machining precision of the workpiece in the drilling process, the shaft type workpiece to be machined generally needs to be fixed on a drilling machine through a drilling clamp so as to facilitate subsequent drilling work. At present, the adopted clamp scheme is that a shaft workpiece with one size and specification corresponds to a set of drilling clamp.

However, in the one-to-one jig scheme, different drilling jigs need to be replaced when drilling shaft workpieces with different lengths and different outer diameters. Therefore, the conventional boring jig is not highly applicable.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a drilling jig with high applicability to the problem that the conventional drilling jig is not high in applicability.

A drill jig comprising:

the shaft type workpiece clamping device comprises a base, a clamping part and a clamping part, wherein the base is provided with a bearing surface, and one side of the base, which is provided with the bearing surface, is provided with a clamping part for placing a shaft type workpiece;

the clamping assembly comprises a support and a pressing block, the support is arranged on the bearing surface, the pressing block is arranged at the position, opposite to the clamping part, of the support, and the pressing block can extend and retract along a first direction perpendicular to the bearing surface; and

the axial positioning assembly comprises a support seat arranged on the bearing surface and an apex arranged on one side, facing the clamping part, of the support seat, the support seat and the clamping part are arranged at intervals in a second direction perpendicular to the first direction, the support seat can slide along the second direction, and the apex can slide along the first direction.

In one embodiment, the base includes a bottom plate having the bearing surface and a supporting block disposed on the bearing surface, and the clamping portion is formed on a side of the supporting block facing away from the bearing surface.

In one embodiment, the clamping portion is a V-shaped groove formed in a side surface of the support block facing away from the bearing surface, and the V-shaped groove extends along the second direction.

In one embodiment, the support comprises a fixed supporting rod, a connecting vertical rod and a movable supporting rod, the fixed supporting rod and the movable supporting rod are arranged in parallel at intervals, one end of the fixed supporting rod and one end of the movable supporting rod are both arranged on the bearing surface, two ends of the connecting vertical rod are respectively connected with one end of the fixed supporting rod, which is far away from the base, and one end of the movable supporting rod, which is far away from the base, and the pressing block is arranged at a position of the connecting vertical rod, which is opposite to the clamping part.

In one embodiment, one end of the connecting vertical rod is hinged to one end, away from the base, of the fixed supporting rod, and one end, away from the fixed supporting rod, of the connecting vertical rod is detachably connected with the movable supporting rod.

In one embodiment, the movable supporting rod is a connecting screw rod, one end of the connecting screw rod is hinged to the base, a clamping groove is formed in one end, away from the fixed supporting rod, of the connecting vertical rod, the clamping assembly further comprises a fastening nut located on one side, away from the base, of the connecting vertical rod, and one end, away from the base, of the connecting screw rod can be clamped in the clamping groove and screwed with the fastening nut.

In one embodiment, the support is provided with an adjusting threaded hole at a position opposite to the clamping portion, the clamping assembly further comprises an adjusting screw rod with one end fixedly connected with one side of the pressing block back to the bearing surface, and the adjusting screw rod penetrates through the adjusting threaded hole and is screwed with the adjusting threaded hole.

In one embodiment, the bearing surface is provided with a guide groove, the guide groove extends along the second direction, and the support is slidably mounted in the guide groove.

In one embodiment, the guide groove is a T-shaped groove, the drilling jig further comprises a T-shaped connecting piece, a fixing hole is formed in a position, opposite to the guide groove, of the support, and the T-shaped connecting piece is slidably arranged in the T-shaped groove in a penetrating manner and fixed in the fixing hole.

In one embodiment, one of an end of the center close to the support and a position of the support opposite to the center is provided with a long strip-shaped through hole along the first direction, the other end of the center is provided with a connecting hole, the axial positioning assembly further comprises a threaded fastener, and the threaded fastener is slidably arranged through the long strip-shaped through hole and is axially positioned and fixed in the connecting hole.

Above-mentioned boring grab, when boring grab was located vertical plane, the first direction was the horizontal direction, and the second direction is vertical direction, is the axial when axle type work piece was placed on boring grab too. In the drilling process, if the shaft workpieces with different outer diameters need to be switched to be drilled, the distance from the pressing block to the bearing surface is adjusted according to the outer diameter of the shaft workpiece, and the drilling clamp can clamp the shaft workpieces with different outer diameters; if the machining of the shaft workpieces with different lengths needs to be switched, the installation position of the center on the axial direction of the shaft workpiece and the distance between the center and the bearing surface are adjusted according to the length of the shaft workpiece, so that the drilling clamp can axially position the shaft workpieces with different lengths. Therefore, the drilling clamp can clamp shaft workpieces with different lengths and different outer diameters, and has high applicability.

Drawings

Fig. 1 is a front view of a drilling jig according to a preferred embodiment of the present invention;

FIG. 2 is a side view of the drill jig of FIG. 1;

fig. 3 is a schematic structural view of a connecting vertical rod in the drilling jig shown in fig. 1.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, a drilling jig 10 according to a preferred embodiment of the present invention includes a base 100, a clamping assembly 200, and an axial positioning assembly 300. The drilling fixture 10 is used for fixing the shaft workpiece 20 to be machined on drilling equipment, so that the shaft workpiece 20 is more stable in the drilling process, and the accuracy of drilling the shaft workpiece 20 is improved.

It should be noted that, in actual use, the drilling jig 10 may be located in a horizontal plane or a vertical plane. When the drilling fixture 10 is positioned on the horizontal plane, the drilling fixture 10 is of a horizontal structure, and the shaft workpiece 20 clamped on the drilling fixture 10 is horizontally placed; when the drilling jig 10 is located at the vertical plane, the drilling jig 10 is of a vertical structure, and the shaft-like workpiece 20 clamped on the drilling jig 10 is vertically placed. In the present embodiment, the description will be given mainly by taking the vertical drilling jig 10 as an example.

Referring to fig. 2 again, the base 100 has a carrying surface 110. The base 100 mainly plays a supporting role and is generally made of stainless steel, alloy steel, cast iron, and other materials with high strength, so that the base 100 has a large bearing capacity. The side of the base 100 having the carrying surface 110 is provided with a clamping portion 120 for placing the shaft-like workpiece 20.

The position relationship of the clamping portion 120 includes the following two conditions: firstly, the clamping portion 120 is on the carrying surface 110, so the shaft-like workpiece 20 located on the clamping portion 120 directly contacts with the carrying surface 110; secondly, the clamping portion 120 is spaced apart from the carrying surface 110, so that the shaft-like workpiece 20 located at the clamping portion 120 is spaced apart from the carrying surface 110, i.e. the shaft-like workpiece 20 located at the clamping portion 120 is not directly contacted with the carrying surface 110.

The clamping assembly 200 includes a bracket 210 and a pressing block 220. The support 210 is disposed on the supporting surface 110. The pressing block 220 is mounted at a position opposite to the bearing surface 110 of the bracket 210. The pressing block 220 is retractable along a first direction 30 perpendicular to the bearing surface 110. When the boring jig 10 is located in a vertical plane, the bearing surface 110 is a vertical plane, the first direction 30 is a horizontal direction perpendicular to the vertical plane, and the pressing block 220 is movable in the horizontal direction.

Thereby, the pressing piece 220 is retractable in the first direction 30 to be close to or far from the clamping portion 120, thereby achieving adjustment of the distance between the pressing piece 220 and the clamping portion 120. Therefore, when the shaft-type workpieces 20 with different outer diameters are drilled and machined, the pressing block 220 is matched with the clamping part 120, and the radial positioning of the shaft-type workpieces 20 can still be realized. Therefore, one set of the drilling jig 10 can clamp and position various shaft workpieces 20 with different outer diameters.

Referring again to fig. 1, the axial positioning assembly 300 includes a support base 310 and a tip 320. The support 310 is mounted on the carrying surface 110 and spaced apart from the clamping portion 120 in a second direction 40 perpendicular to the first direction 30. The holder 310 is slidable in the second direction 40. The tip 320 is mounted to a side of the holder 310 facing the clamping portion 120 and is slidable in the first direction 30.

When the drill jig 10 is placed in a vertical plane, the first direction 30 is a horizontal direction, and the second direction 40 is a vertical direction directed toward the clamping portion 120. The holder 310 is slidable in the second direction 40, so that the holder 310 can move the tip 320 in a direction toward or away from the clamping portion 120, thereby adjusting the distance between the tip 320 and the clamping portion 120.

The holder 310 is slidable in the second direction 40 such that the tip 320 moves in a direction towards the clamping portion 120 or away from the clamping portion 120, thereby enabling adjustment of the distance between the tip 320 and the clamping portion 120. When the axial positioning of the shaft workpieces 20 with different lengths needs to be switched, the axial positioning of the shaft workpieces 20 with different lengths can be realized only by adjusting the distance between the tip 320 and the clamping part 120. Therefore, one set of the drilling jig 10 can clamp and position various shaft workpieces 20 with different lengths.

The process of installing and clamping the shaft-like workpiece 20 on the drilling clamp 10 is as follows:

(1) according to the outer diameter of the shaft workpiece 20, the pressing block 220 is made to stretch along the first direction 30, so that the position of the pressing block 220 is adjusted, and a proper distance is reserved between the rest clamping parts 120 of the pressing block 220; the holder 310 is slid in the second direction to adjust the position of the tip 320 and provide the desired distance between the tip 320 and the clamping portion 120, depending on the length of the shaft workpiece 20.

(2) The end of one end of the shaft workpiece 20 is placed on the tip 320, and the tip 320 is pressed against the center of the end face of one end of the shaft workpiece 20.

(3) One end of the shaft-like workpiece 20, which is far away from the tip 320, is placed on the clamping part 120, and the shaft-like workpiece 20 is clamped between the pressing block 220 and the clamping part 120.

In the present embodiment, the carrying surface 110 is provided with a guide groove 111. The guide groove 111 extends in the second direction 40. The holder 310 is slidably installed in the guide groove 111. Therefore, the guide groove 111 is arranged, so that the support 310 can slide more smoothly in the second direction 40 with higher sliding precision, and the adjustment precision of the mounting position of the tip 320 in the second direction 40 is effectively improved.

Further, in the present embodiment, the guide groove 111 is a T-shaped groove. The drill jig 10 also includes a T-connector 400. The holder 310 has a fixing hole 311 formed at a position opposite to the guide groove 111. The T-shaped connector 400 is slidably inserted into the T-shaped slot and fixed in the fixing hole 311. Specifically, the fixing hole 311 is a threaded hole, the T-shaped connector 400 is a T-shaped bolt, and the T-shaped bolt is inserted into the T-shaped groove and screwed with the threaded hole. Therefore, the T-shaped connecting piece 400 and the T-shaped groove are arranged, so that the support 310 is more convenient to mount.

The tip 320 is slidable in the first direction 30. Thus, the tip 320 is slidable in a direction toward or away from the bearing surface 110, thereby allowing adjustment of the distance between the tip 320 and the bearing surface 110. When the shaft-type workpieces 20 with different outer diameters need to be drilled and machined, the outer diameters of the shaft-type workpieces 20 are different, and the distance between the axis of the shaft-type workpiece 20 and the bearing surface 110 is also changed. Therefore, no matter how large the difference between the outer diameters of the shaft workpieces 20 before and after switching, the effective abutting between the tip 320 and the end of the shaft workpiece 20 can be ensured by adjusting the distance between the tip 320 and the bearing surface 110, so that not only is the reliability of the drilling clamp 10 improved, but also the application range of the drilling clamp 10 is also improved.

In this embodiment, one end of the center 320 close to the holder 310 and the position of the holder 310 opposite to the center 320 are respectively provided with a through hole 321 along the first direction 30, and the other end is provided with a connecting hole 312. The axial positioning assembly 300 further includes an adjustment connecting rod 330. The adjusting connecting rod 330 slidably passes through the elongated through hole 321 and is fixed in the connecting hole 312.

Specifically, the positional relationship between the elongated through hole 321 and the connecting hole 312 includes the following two conditions: in the first situation, one end of the center 320 close to the support 310 is provided with a strip-shaped through hole 321 along the first direction 30, and the support 310 is provided with a connecting hole 312 at a position opposite to the strip-shaped through hole 321; in the second case, the holder 310 is provided with a through hole 321 opposite to the tip 320 along the first direction 30, and the tip 320 is provided with a connecting hole 312 near one end of the holder 310.

When the distance from the center 320 to the bearing surface 110 needs to be adjusted, the position of the connecting rod 330 in the elongated through hole 321 needs to be adjusted. Therefore, the arrangement of the elongated through hole 321 and the adjusting connecting rod 330 can realize the flexible adjustment of the distance between the center 320 and the bearing surface 110.

In this embodiment, the tip 320 has a through hole 321 along the first direction 30 near one end of the support 310. The support 310 is provided with a connecting hole 312 at a position opposite to the tip 320. The strip-shaped through hole 321 is arranged on the center 320, so that the adjustment condition can be observed conveniently when the distance from the center 320 to the bearing surface 110 is adjusted, and the operation of the drilling clamp 10 during the replacement is more convenient.

Further, in the present embodiment, the connection hole 312 is a threaded hole, and the adjustment connection rod 330 is a bolt. The bolt is slidably disposed through the elongated through hole 321 and screwed into the threaded hole. Therefore, when the distance from the center 320 to the bearing surface 110 needs to be adjusted, the distance between the center 320 and the bearing surface 110 can be adjusted by loosening the bolts and sliding the bolts in the elongated through holes 321 to the proper positions, so that the center 320 also reaches the proper positions, and then tightening the bolts. Therefore, the connection hole 312 is provided as a threaded hole, and the adjustment connection rod 330 is provided as a bolt, so that the distance between the tip 320 and the bearing surface 110 can be adjusted more conveniently, and the use of the drilling jig 10 can be facilitated.

Therefore, the pressing block 220, the tip 320 and the support 310 are movably mounted, so that one set of the drilling fixture 10 can be suitable for various shaft workpieces 20 with different outer diameters and different lengths, and the drilling fixture 10 is higher in applicability.

Referring to fig. 2 again, in the present embodiment, the bracket 210 includes a fixed support rod 211, a connecting vertical rod 212, and a movable support rod 213. The fixed strut 211 and the movable strut 213 are parallel and spaced apart. One end of the fixed supporting rod 211 and one end of the movable supporting rod 213 are disposed on the supporting surface 110. The two ends of the connecting rod 212 are respectively connected to the end of the fixed rod 211 far away from the base 100 and the end of the movable rod 213 far away from the base 100. The pressing block 220 is installed at a position where the connecting vertical rod 212 is opposite to the clamping portion 120. Therefore, the fixed support rod 211 and the movable support rod 213 are arranged in parallel at intervals, and two ends of the connecting vertical rod 212 are respectively connected with one end of the fixed support rod 211 and one end of the movable support rod 213, so that the support 210 in a use state is U-shaped, the structure of the support 210 is more stable in the drilling process, and the reliability of the drilling clamp 10 is effectively improved.

Further, in this embodiment, one end of the connecting rod 212 is hinged to one end of the fixing rod 211 away from the base 100. The end of the connecting vertical rod 212 far away from the fixed supporting rod 211 is detachably connected with the movable supporting rod 213.

The process of placing the shaft workpiece 20 on the drilling jig 10 and radially positioning the shaft workpiece 20 is as follows: firstly, the pressing block 220 is moved upwards along the first direction 30 according to the size of the outer diameter of the shaft-type workpiece 20 so as to adjust the installation position of the pressing block 220, and therefore, a proper distance is formed between the pressing block 220 and the clamping part 120; then, one end of the connecting vertical rod 212 is detached from the movable support rod 213, and the end of the connecting vertical rod 212 far away from the fixed support rod 211 rotates towards the direction far away from the movable support rod 213, so as to open the connecting vertical rod 212; then, the shaft-like workpiece 20 is placed on the clamping part 120 along the second direction 40; then, one end of the connecting vertical rod 212, which is far away from the fixed support rod 211, is rotated in the direction toward the movable support rod 213 to be connected with the movable support rod 213, so that the shaft-like workpiece 20 is clamped between the pressing block 220 and the clamping part 120, and the radial positioning of the shaft-like workpiece 20 is realized.

The process of taking the shaft workpiece 20 off the drilling fixture 10 is as follows: detaching one end of the connecting vertical rod 212 from the movable support rod 213, and rotating one end of the connecting vertical rod 212 far away from the fixed support rod 211 towards the direction far away from the movable support rod 213 to open the connecting vertical rod 212; the shaft-like workpiece 20 may be removed from the holding portion 120.

Therefore, one end of the connecting vertical rod 212 is hinged to the fixed supporting rod 211, the other end of the connecting vertical rod 212 is detachably connected to the movable supporting rod 213, and when the drilling fixture 10 needs to be clamped or disassembled, the connecting vertical rod 212 only needs to be opened or closed, so that the clamping and disassembling work of the shaft-type workpiece 20 on the drilling fixture 10 is more convenient, and the drilling fixture 10 is more convenient to use.

Referring to fig. 3, in the present embodiment, the movable rod 213 is a connecting screw. One end of the connecting screw is hinged to the base 100. The end of the connecting rod 212 far away from the fixing rod 211 is provided with a slot 2121. The clamping assembly 200 further includes a tightening nut 214 located on a side of the connecting post 212 facing away from the base 100. One end of the connecting screw rod away from the base 100 can be clamped in the clamping groove 2121 and screwed with the fastening nut 214.

When the connecting vertical rod 212 and the movable support rod 213 need to be connected, one end of the connecting screw rod, which is far away from the base 100, needs to be clamped into the clamping groove 2121, and meanwhile, the connecting screw rod extends out of the opening of the clamping groove 2121, which is far away from one end of the base 100, and is screwed with the fastening nut 214, so that the connecting vertical rod 212 and the movable support rod 213 can be connected; when the connecting vertical rod 212 needs to be detached from the movable support rod 213, the connecting vertical rod 212 and the movable connecting rod can be detached easily only by loosening the fastening nut 214 and pulling out the connecting screw rod from the slot 2121. Therefore, the movable support rod 213 is provided as a connection screw and is engaged with the fastening nut 214, so that the connection vertical rod 212 is more conveniently opened and closed, and the convenience of the drilling jig 10 is further improved.

In the actual use process, in order to improve the clamping efficiency of the drilling clamp 10 on the shaft workpiece 20, the fastening nut 214 may be screwed to one end of the connecting screw rod away from the base 100 in advance. When the connecting screw rod is required to be connected with the connecting vertical rod 212, the connecting screw rod is only required to be clamped into the clamping groove 2121, and the fastening nut 214 is screwed tightly; when the connecting screw rod and the connecting vertical rod 212 need to be disassembled, the fastening nut 214 only needs to be unscrewed, and the connecting screw rod is pulled out of the clamping groove 214.

In this embodiment, the bracket 210 has an adjusting screw hole 2122 formed at a position opposite to the clamping portion 120. The clamping assembly 200 further includes an adjusting screw 230 having one end fixedly connected to a side of the pressing block 220 opposite to the bearing surface 110. The adjusting screw 230 is inserted into the adjusting threaded hole 2122 and screwed into the adjusting threaded hole 2122. Specifically, one end of the adjusting screw 230 is fixedly connected to the pressing plate 220 by welding, screwing, or the like. The adjusting screw 230 penetrates through the adjusting threaded hole 2122 and is screwed with the adjusting threaded hole 2122, so that a screw structure is formed between the adjusting screw 230 and the adjusting threaded hole 2122, and the extension and contraction of the pressing block 220 in the first direction 30 can be realized by screwing the adjusting screw 230, so that the adjustment of the distance between the rest bearing surfaces 110 of the pressing block 220 is more convenient. Specifically, the adjusting screw hole 2122 is opened on the connecting vertical rod 212.

Referring to fig. 2 and fig. 3 again, in the present embodiment, the clamping assembly 200 further includes an adjusting nut 240. One end of the adjusting screw 230 away from the pressing block 220 passes through the adjusting threaded hole 2122 and is screwed with the adjusting nut 240. Therefore, if the adjusting screw 230 slides relative to the bracket 210 during use, the adjusting nut 240 can prevent the adjusting screw 230 from sliding continuously in the direction toward the bearing surface 110, which greatly improves the reliability of the drilling jig 10.

Referring to fig. 2 again, in the present embodiment, the base 100 includes a bottom plate 130 having a supporting surface 110 and a supporting block 140 disposed on the supporting surface 110. The bearing surface 110 is a vertical surface when the drill jig 10 is in a vertical position. The side of the supporting block 140 facing away from the carrying surface 110 is formed with a clamping portion 120. The supporting block 140 may be fixedly connected to the bottom plate 130 by means of screwing, welding, clamping, or the like, or may be integrally formed with the bottom plate 130 by casting or the like. Specifically, the supporting block 140 is screwed with the base plate 130.

Therefore, the length of the shaft-like workpiece 20 is usually longer, and the clamping portion 120 is disposed on the side of the supporting block 140 facing away from the bearing surface 110, and other positions of the shaft-like workpiece 20 placed on the clamping portion 120 are suspended and do not directly contact with the bearing surface 110, so that the area of the shaft-like workpiece 20 directly contacting with the drilling jig 10 is reduced, the probability of the shaft-like workpiece 20 being worn in the drilling process is greatly reduced, and the reliability of the drilling jig 10 is higher.

Further, in the present embodiment, the clamping portion 120 is a V-shaped groove opened on a side surface of the supporting block 140 opposite to the bearing surface 110. The V-shaped grooves extend in a second direction 40. When the boring jig 10 is located at the vertical plane, the second direction 40 is the vertical direction and coincides with the axial direction of the shaft-like workpiece 20 clamped on the boring jig 10. Therefore, when the shaft workpiece 20 is clamped on the drilling fixture 10, the shaft workpiece 20 is clamped between the pressing block 220 and the V-shaped groove, and the V-shaped groove can limit the shaft workpiece 20 in the horizontal direction perpendicular to the second direction 40, so that the situation that the shaft workpiece 20 clamped on the drilling fixture 10 slides out of the clamping part 120 is greatly reduced, and the reliability of the drilling fixture 10 is effectively improved.

In addition, the V-shaped grooves can limit the shaft workpieces 20 with different outer diameters, and the applicability of the drilling clamp 10 is further improved.

When the drilling jig 10 is located in a vertical plane, the first direction 30 is a horizontal direction, and the second direction 40 is a vertical direction, which is also an axial direction of the shaft-like workpiece 20 when the drilling jig 10 is placed on the drilling jig. In the drilling process, if the drilling of the shaft workpieces 20 with different outer diameters needs to be switched, the distance from the pressing block 220 to the bearing surface 110 is adjusted according to the outer diameter of the shaft workpiece 20, so that the drilling fixture 10 can clamp the shaft workpieces 20 with different outer diameters; if the machining of the shaft-type workpieces 20 with different lengths needs to be switched, the installation position of the center 320 in the axial direction of the shaft-type workpiece 20 and the distance between the center 320 and the bearing surface 110 are adjusted only according to the length of the shaft-type workpiece 20, so that the drilling fixture 10 can axially position the shaft-type workpieces 20 with different lengths. Therefore, the drilling jig 10 can clamp the shaft workpieces 20 with different lengths and different outer diameters, and therefore the drilling jig 10 has high applicability.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A drill jig, comprising:

the shaft type workpiece clamping device comprises a base, a clamping part and a clamping part, wherein the base is provided with a bearing surface, and one side of the base, which is provided with the bearing surface, is provided with a clamping part for placing a shaft type workpiece;

the clamping assembly comprises a support and a pressing block, the support is arranged on the bearing surface, the pressing block is arranged at the position, opposite to the clamping part, of the support, and the pressing block can extend and retract along a first direction perpendicular to the bearing surface; and

the axial positioning assembly comprises a support seat arranged on the bearing surface and an apex arranged on one side, facing the clamping part, of the support seat, the support seat and the clamping part are arranged at intervals in a second direction perpendicular to the first direction, the support seat can slide along the second direction, and the apex can slide along the first direction.

2. The drill jig of claim 1, wherein the base comprises a bottom plate having the bearing surface and a support block disposed on the bearing surface, wherein the clamping portion is formed on a side of the support block facing away from the bearing surface.

3. The drill jig of claim 2, wherein the clamping portion is a V-shaped groove formed in a side surface of the support block facing away from the bearing surface, and the V-shaped groove extends in the second direction.

4. The drilling jig as claimed in claim 1, wherein the support comprises a fixed rod, a connecting rod and a movable rod, the fixed rod and the movable rod are parallel and spaced, one end of the fixed rod and one end of the movable rod are both disposed on the bearing surface, two ends of the connecting rod are respectively connected to one end of the fixed rod away from the base and one end of the movable rod away from the base, and the pressing block is mounted at a position of the connecting rod opposite to the clamping portion.

5. The boring grab of claim 4, wherein the connecting rod is hinged to the end of the fixed rod remote from the base, and the connecting rod is detachably connected to the movable rod.

6. The drilling jig as claimed in claim 5, wherein the movable support rod is a connecting screw rod, one end of the connecting screw rod is hinged to the base, a slot is formed in an end of the connecting vertical rod away from the fixed support rod, the clamping assembly further comprises a fastening nut located on one side of the connecting vertical rod away from the base, and one end of the connecting screw rod away from the base can be clamped in the slot and screwed with the fastening nut.

7. The drilling jig of claim 1, wherein the support is provided with an adjusting threaded hole at a position opposite to the clamping portion, the clamping assembly further comprises an adjusting screw having one end fixedly connected to a side of the pressing block facing away from the bearing surface, and the adjusting screw is inserted into the adjusting threaded hole and screwed with the adjusting threaded hole.

8. The drilling jig of claim 1, wherein the bearing surface defines a guide slot extending along the second direction, and the support is slidably mounted in the guide slot.

9. The drilling jig of claim 8, wherein the guide groove is a T-shaped groove, the drilling jig further comprises a T-shaped connecting member, a fixing hole is formed in a position of the support opposite to the guide groove, and the T-shaped connecting member is slidably inserted into the T-shaped groove and fixed in the fixing hole.

10. The drilling jig of claim 1, wherein one of an end of the center near the support and a position of the support opposite to the center is provided with an elongated through hole along the first direction, and the other end is provided with a connecting hole, and the axial positioning assembly further comprises a threaded fastener, and the threaded fastener is slidably disposed through the elongated through hole and axially positioned and fixed in the connecting hole.