Long shaft part machining and positioning tool

Abstract

The utility model discloses a long shaft part machining and positioning tool, and belongs to the technical field of long shaft part clamping and fixing. The multiple fastening assemblies slide on the base in the long edge direction of the base, each fastening assembly comprises a base plate and two clamping parts which are symmetrical with the center of the base plate as the reference, the two clamping parts in the same fastening assembly are matched with each other to clamp the long shaft from the left side and the right side of the long shaft, and the clamping parts clamp the long shaft from the upper side and the lower side of the long shaft; when the clamping device is used for clamping, four-point contact is formed between the clamping device and a part, clamping stress can be effectively dispersed, and deformation of a long shaft is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to long axle type part clamping fixed technical field, concretely relates to a long axle type part machining positioning frock. BACKGROUND

[0002] Long axle type part is one of very common part shapes, needs to be clamped and fixed to long axle type part when processing, and the current traditional long axle type processing positioning device adopts the V type block of interval or one-way clamping structure, and the contact with the part is three-point contact when fixing the axle type part, and the three-point contact stress concentration exists, thereby the risk of part deformation is easily caused, in order to solve the above problem, the utility model provides a long axle type part machining positioning frock. SUMMARY

[0003] In view of the above technical deficiencies, the utility model aims at providing a long axle type part machining positioning frock, which forms four-point contact with the part during clamping, can effectively disperse clamping stress and avoid long axle deformation.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: the utility model provides a long axle type part machining positioning frock, which comprises:

[0005] A base;

[0006] A plurality of fastening assemblies, which slide on the base along the long edge direction of the base, the fastening assembly comprises a base plate and two clamping portions symmetrically arranged with the base plate center as the reference, the two clamping portions in the same fastening assembly clamp the long axle from the left and right sides of the long axle, and the clamping portions clamp the long axle from the upper and lower sides of the long axle.

[0007] Preferably, the clamping portion is slidably installed on the base plate through a slide channel arranged on the base plate and slides along the short edge direction of the base, a bidirectional screw rod is rotatably installed in the slide channel, the two clamping portions on the same base plate are respectively threadedly connected to the two ends of the bidirectional screw rod, the threads at the two ends of the bidirectional screw rod are symmetrically arranged, and rotating the bidirectional screw rod can make the two clamping portions move away from each other or move towards each other.

[0008] Preferably, the clamping portion comprises: a telescopic rod, both ends of the telescopic rod are rotatably connected to a clamping shaft through an ear plate, and the axis of the clamping shaft is parallel to the long edge of the base.

[0009] Preferably, the telescopic rod comprises:

[0010] An outer frame, which is slidably installed on the base plate;

[0011] An inner rod, which is slidably installed in the inner part of the outer frame;

[0012] An adjusting screw is rotatably installed on the inner side wall of the outer frame, and the adjusting screw penetrates the inner rod and is threadedly connected with the inner rod;

[0013] The lower end of the outer frame and the upper end of the inner rod are fixedly connected with an ear plate.

[0014] Preferably, one end of the inner rod inside the outer frame is folded to form a boss, the size of the opening of the outer frame is matched with the size of the inner rod, and is smaller than the size of the boss.

[0015] Preferably, one end of the base plate is folded downward and matched with the side surface of the base, and a resisting screw is threadedly connected on the folded end.

[0016] Preferably, a friction block is fixedly connected on the inner end surface of the resisting screw, and a friction strip matched with the friction block is arranged on the base.

[0017] Preferably, a plurality of slide rails are arranged on the upper side surface of the base, and a plurality of slide blocks matched with the slide rails are fixedly connected on the lower side surface of the base plate.

[0018] Preferably, the shape of the cross section of the slide rail is inverted T shape, and the shape of the slide block is matched with the shape of the slide rail.

[0019] Preferably, a plurality of rolling balls are rotatably installed on the lower side surface of the slide block, and the rolling balls are in contact with the lower side wall of the slide rail.

[0020] The beneficial effects of the utility model lie in:

[0021] The utility model discloses a two -way screw symmetry drive clamping part cooperation can adjust the distance of two clamping shafts of spacing, not only can be applicable to the shaft class spare of different diameters, can also adjust different fastening assembly to satisfy the positioning of special-shaped spare such as ladder shaft, four clamping shafts on same fastening assembly form four -point contact with shaft class spare, effectively disperse clamping stress, avoid long -axis deformation.

[0022] The utility model discloses a T -shaped slide rail and rolling ball combination structure, can reduce the friction of fastening assembly when sliding, make fastening assembly more smoothly slide on the base, and resisting screw cooperation friction block and friction strip can quickly and stably complete the position locking of fastening assembly, make fastening assembly can stably fix spare. DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, below will to the drawing needed to use in the embodiment or prior art description simple introduction, obviously, the drawing in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0024] Figure 1 The structure diagram of the long shaft type part machining positioning tool is provided for the embodiment of the utility model.

[0025] Figure 2 The exploded view of the base plate and the base of the utility model.

[0026] Figure 3 The sectional view of the utility model Figure 1 .

[0027] Figure 4 The exploded view of the outer frame and the base plate of the utility model.

[0028] Figure 5 The sectional view of the outer frame and the inner rod of the utility model.

[0029] Figure 6 The exploded view of the utility model Figure 5 .

[0030] Mark explanation:

[0031] 1, base, 2, base plate, 3, bidirectional screw rod, 4, clamping shaft, 5, outer frame, 6, inner rod, 7, adjusting bolt, 8, abutting bolt, 9, slide rail, 10, sliding block, 11, ball, 12, friction block, 13, friction strip. Specific implementation

[0032] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0033] The utility model provides a kind of long shaft type part machining positioning tool, as Figures 1 to 6 It is shown.

[0034] Embodiment one:

[0035] The application discloses a long-axis part machining positioning tool, which comprises a base 1, a plurality of fastening assemblies are installed on the base 1 and slide along the long edge direction of the base 1, the fastening assembly comprises a base plate 2 and clamping parts symmetrically distributed on the base plate 2, the clamping parts are slidably installed on the base plate 2 through sliding grooves on the base plate 2 and slide along the long edge direction of the base plate 2 (that is, along the short edge direction of the base 1), a double-way screw rod 3 is rotatably installed in the sliding groove, the threads at two ends of the double-way screw rod 3 are symmetric to each other, and the two ends of the double-way screw rod 3 are threadedly connected with the two clamping parts respectively, the two clamping parts can be driven to synchronously move towards each other or away from each other along the short edge direction of the base through rotation of the double-way screw rod 3, so that the two clamping parts on the same base plate 2 can be adjusted to clamp and fix the part from the left and right sides of the shaft part according to the radial size of the shaft part.

[0036] The clamping part comprises a telescopic rod, the upper and lower ends of the telescopic rod are rotatably installed with clamping shafts 4 through fixedly connected ear plates, the axial direction of the clamping shafts 4 is parallel to the long edge of the base 1, the length of the telescopic rod is adjusted according to the radial size of the shaft part, so that the distance between the two clamping shafts 4 can be controlled, and then the two clamping shafts 4 can clamp and fix the part from the upper and lower sides of the shaft part.

[0037] The four clamping shafts 4 on the fastening assembly form four-point contact with the part when clamping the shaft part, so that the clamping stress can be effectively dispersed and the part deformation can be avoided.

[0038] Embodiment two:

[0039] The telescopic rod comprises an outer frame 5 and an inner rod 6, the inner rod 6 is slidably connected with the outer frame 5, one end of the inner rod 6 located in the inner frame 5 is folded to form a boss, the size of the boss is larger than the opening of the outer frame 5, the size of the opening of the outer frame 5 is matched with the size of the inner rod 6, so that the inner rod 6 can be prevented from completely separating from the outer frame 5, an adjusting screw 7 is rotatably installed in the inner frame 5, the upper end of the adjusting screw 7 penetrates the inner rod 6 and is threadedly connected with the inner rod 6, and extends to the outside of the inner rod 6, the position of the inner rod 6 in the outer frame 5 can be controlled through rotation of the adjusting screw 7.

[0040] Embodiment three:

[0041] A plurality of sliding rails 9 are arranged on the upper side of the base 1, the shape of the sliding rail 9 in the transverse section is inverted "T" shape, a plurality of sliding blocks 10 matched with the sliding rails 9 are fixedly connected to the lower side of the base plate 2, the shape of the sliding block 10 is matched with the shape of the sliding rail 9, so that the base plate 2 can slide on the base 1 without falling off, a plurality of rolling balls 11 are rotatably installed on the lower side of the sliding block 10, so that the base plate 2 can stably slide on the base 1.

[0042] One end of the substrate 2 is folded downward and adheres to the side of the base 1, and a threaded bolt 8 is threadedly connected to the folded end of the substrate 2, an inner end surface of the threaded bolt 8 is fixedly connected with a friction block 12 (the end surface of the threaded bolt 8 close to the base 1 is an inner end surface), the base 1 is fixedly connected with a friction strip 13 matched with the friction block 12, and the facing surfaces of the friction block 12 and the friction strip 13 are rough surfaces, which can increase the friction between the friction block 12 and the friction strip 13, stably fix the position of the substrate 2, and enable the fastening assembly to stably fix the shaft parts.

[0043] The material of the friction block 12 and the friction strip 13 can be rubber.

[0044] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technologies thereof, the present application also intends to include these modifications and variations.

Claims

1. A positioning fixture for machining long shaft-type parts, characterized in that, include: Base (1); Multiple fastening components slide along the long side of the base (1) on the base (1). The fastening components include a base plate (2) and two clamping parts symmetrical about the center of the base plate (2). The two clamping parts in the same fastening component cooperate with each other to clamp the long shaft from the left and right sides of the long shaft. The clamping parts clamp the long shaft from the upper and lower sides of the long shaft.

2. The positioning fixture for machining long shaft parts as described in claim 1, characterized in that, The clamping part is slidably mounted on the substrate (2) via a slide rail provided on the substrate (2) and slides along the short side of the base (1). A bidirectional screw (3) is rotatably mounted in the slide rail. The two clamping parts located on the same substrate (2) are respectively threaded to both ends of the bidirectional screw (3). The threads at both ends of the bidirectional screw (3) are symmetrical to each other. Rotating the bidirectional screw (3) can make the two clamping parts move in opposite directions or towards each other at the same time.

3. The positioning fixture for machining long shaft parts as described in claim 1, characterized in that, The clamping part includes a telescopic rod, both ends of which are rotatably connected to a clamping shaft (4) via an ear plate. The axis of the clamping shaft (4) is parallel to the long side of the base (1).

4. The positioning fixture for machining long shaft parts as described in claim 3, characterized in that, The telescopic rod includes: Outer frame (5), which is slidably mounted on substrate (2); Inner rod (6), which is slidably installed inside the outer frame (5); Adjusting bolt (7), which is rotatably mounted on the inner side wall of the outer frame (5), and the adjusting bolt (7) passes through the inner rod (6) and is threadedly connected to the inner rod (6); Ear plates are fixedly connected to the lower end of the outer frame (5) and the upper end of the inner rod (6).

5. The positioning fixture for machining long shaft parts as described in claim 4, characterized in that, The inner rod (6) is located inside the outer frame (5) and folds outward to form a boss. The size of the opening of the outer frame (5) is adapted to the size of the inner rod (6) and is smaller than the size of the boss.

6. The positioning fixture for machining long shaft parts as described in claim 1, characterized in that, One end of the substrate (2) is folded down and fits against the side of the base (1), and a tightening bolt (8) is threaded onto the folded end.

7. The positioning fixture for machining long shaft parts as described in claim 6, characterized in that, A friction block (12) is fixedly connected to the inner end face of the clamping bolt (8), and a friction strip (13) adapted to the friction block (12) is provided on the base (1).

8. The positioning fixture for machining long shaft parts as described in claim 1, characterized in that, The upper side of the base (1) is provided with multiple slide rails (9), and the lower side of the base plate (2) is fixedly connected with multiple sliders (10) that are adapted to the slide rails (9).

9. The positioning fixture for machining long shaft parts as described in claim 8, characterized in that, The cross-section of the slide rail (9) is inverted "T" shaped, and the shape of the slider (10) is adapted to the shape of the slide rail (9).

10. The positioning fixture for machining long shaft parts as described in claim 9, characterized in that, Multiple balls (11) are rotatably mounted on the lower side of the slider (10), and the balls (11) abut against the lower side wall of the slide rail (9).

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