A fixing fixture for machining the outer circle of a small shaft

Abstract

The utility model discloses a fixing fixture for machining the outer circle of a small shaft, comprising a base, bottom blocks are arranged on both sides of the top of the base, a convex groove is provided on the top of the base, convex blocks are slidably connected on both sides of the inner part of the convex groove, two bottom blocks are respectively fixedly arranged on the tops of the two convex blocks, the top of the convex block is threadedly connected with a knob screw, and the bottom end of the knob screw can contact and press against the bottom of the convex groove. The utility model relates to the technical field of mechanical processing, the knob screw is screwed to separate it from the bottom surface of the convex groove, at this time the convex block can slide, and then the spacing between the two bottom blocks is adjusted, when the position of the bottom block is determined, the knob screw can be screwed to press against the convex groove, so that the position of the bottom convex block and the bottom block is fixed, at this time the two ends of the shaft to be processed are respectively placed in the right-angle grooves of the two bottom blocks, and then the two handwheel machines are turned to drive the top block to move down, so as to fix the shaft to be processed.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a fixing fixture for machining the outer circle of a small shaft. Background Art

[0002] Shaft parts are one of the typical parts often encountered in hardware accessories. They are mainly used to support transmission parts, transmit torque and bear loads. According to the different structural forms of shaft parts, they can generally be divided into three categories: smooth shafts, stepped shafts and special-shaped shafts; or divided into solid shafts, hollow shafts, etc. Shaft parts need to be fixed during processing, and most of the existing fixing fixtures are set with two fixing slots, the shaft parts are placed inside, and then fixed by bolting down the cover plate. This fixing method cannot adjust the fixing position according to the length of the shaft and the processing position, which leads to certain limitations in the use of the fixture. To this end, we provide a fixing fixture for small shaft external cylindrical processing to solve the above problems. Utility Model Content

[0003] In order to solve the above problems, that is, to solve the problems raised by the above background technology, the utility model proposes a fixing fixture for small shaft external circle processing, including a base, bottom blocks are arranged on both sides of the top of the base, a right-angle groove for placing the shaft is opened on the top of the bottom block, a fixing mechanism is arranged on the top of the bottom block, a convex groove is opened on the top of the base, convex blocks are slidably clamped on both sides of the inner part of the convex groove, the two bottom blocks are respectively fixedly arranged on the tops of the two convex blocks, the top of the convex block is threadedly connected with a knob screw, and the bottom end of the knob screw can contact and press against the bottom of the convex groove.

[0004] Preferably, the fixing mechanism includes two columns, and the two columns are respectively fixedly arranged on both sides of the top of the bottom block, and a top plate is fixedly arranged on the top of the two columns, a screw is threadedly connected to the central position of the top plate, and the bottom end of the screw is rotatably connected to the top block through a bearing, and sliding sleeves are fixedly arranged on both sides of the outer wall of the top block, and the two sliding sleeves are respectively slidably connected to the outer walls of the corresponding columns.

[0005] Preferably, the top of the base is provided with sliding grooves on both sides of the convex groove, the two sliding grooves are arranged parallel to the convex groove, and sliders are slidably connected to the inner sides of the sliding grooves, and the sliders are fixedly arranged at the bottom end of the corresponding bottom block.

[0006] Preferably, a right-angle groove for pressing the shaft is provided at the bottom of the top block, and a hand wheel is fixedly provided at the top end of the screw rod.

[0007] Preferably, the end faces of the convex groove and the sliding block are both designed to be open, and the top of the base is processed with scale lines.

[0008] The beneficial technical effect of the utility model is as follows: the knob screw is turned to separate it from the bottom surface of the convex groove, and the convex block can slide to adjust the distance between the two bottom blocks. When the position of the bottom block is determined, the knob screw can be turned to tighten the convex groove to fix the position of the bottom convex block and the bottom block. At this time, the two ends of the shaft to be processed are respectively placed in the right-angle grooves of the two bottom blocks, and then the two handwheels are turned to drive the top block to move downward, so as to fix the shaft to be processed, thereby solving the problem that the existing fixture cannot adjust the fixed position according to the length of the shaft and the processing position. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A cross-sectional structural schematic diagram of the utility model is shown.

[0010] Figure 2 A side structural schematic diagram of the utility model is shown.

[0011] Figure numerals: 1, base; 101, convex groove; 102, slide groove; 2, convex block; 3, knob screw; 4, bottom block; 5, column; 6, top plate; 7, screw; 8, top block; 9, sleeve; 10, handwheel; 11, slider. DETAILED DESCRIPTION

[0012] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0013] The utility model proposes a fixing fixture for machining the outer circle of a small shaft, comprising a base 1, bottom blocks 4 are arranged on both sides of the top of the base 1, a right-angle groove for placing the shaft is opened on the top of the bottom block 4, and a fixing mechanism is arranged on the top of the bottom block 4, characterized in that: a convex groove 101 is opened on the top of the base 1, and convex blocks 2 are slidably clamped on both sides of the inside of the convex groove 101, and the matching design of the convex groove 101 and the convex block 2 can play a stable lateral guiding role for the movement of the convex block 2, two bottom blocks 4 are respectively fixedly arranged on the tops of the two convex blocks 2, and the convex blocks 2 can slide to adjust the distance between the two bottom blocks 4, and a knob screw 3 is connected to the top of the convex block 2 by a through-thread connection, and the bottom end of the knob screw 3 can contact and press against the bottom of the convex groove 101, and its design purpose is that the knob screw 3 can realize the position locking of the convex block 2.

[0014] Specifically, the fixing mechanism includes two columns 5, and the two columns 5 are respectively fixed on both sides of the top of the bottom block 4. A top plate 6 is fixed on the top of the two columns 5. A screw rod 7 is threadedly connected to the central position of the top plate 6. The bottom end of the screw rod 7 is rotatably connected to a top block 8 through a bearing. The rotating screw rod 7 can move downward while driving the top block 8 to move, and realize the tight fixation of the processing axis. Slide sleeves 9 are fixed on both sides of the outer wall of the top block 8. The two slide sleeves 9 are respectively slidably connected to the outer walls of the corresponding columns 5. Through the cooperation of the slide sleeves 9 and the columns 5, the top block 8 can move stably longitudinally.

[0015] Specifically, the top of the base 1 is provided with sliding grooves 102 on both sides of the convex groove 101. The two sliding grooves 102 are arranged parallel to the convex groove 101, and the inner sides of the sliding grooves 102 are slidably connected with sliders 11. The sliders 11 are fixedly arranged at the bottom of the corresponding bottom block 4. Through the design of the sliders 11 and the sliding grooves 102, the movement stability of the bottom block 4 can be increased, and a certain supporting effect can also be provided to the bottom block 4.

[0016] Specifically, a right-angle groove for tightening the shaft is provided at the bottom of the top block 8. The design purpose is to increase the surface for fixing the shaft by providing the right-angle groove for tightening the shaft, thereby making the fixation more stable. A handwheel 10 is fixed at the top end of the screw rod 7, and the user can rotate the screw rod 7 through the handwheel 10.

[0017] Specifically, the end faces of the convex groove 101 and the slider 11 are both designed to be open. The design purpose is to allow the convex block 2 and the bottom block 4 to be disassembled for maintenance. The top of the base 1 is processed with scale lines, which can facilitate users to intuitively control the distance between the two bottom blocks 4.

[0018] Working principle: When the fixing fixture is in use, it can be adjusted according to the length of the shaft to be processed. First, the knob screw 3 is screwed to separate it from the bottom surface of the convex groove 101. At this time, the convex block 2 can slide to adjust the distance between the two bottom blocks 4. When the position of the bottom block 4 is determined, the knob screw 3 can be screwed to tighten the convex groove 101 to fix the position of the bottom convex block 2 and the bottom block 4. At this time, the two ends of the shaft to be processed are respectively placed in the right-angle grooves of the two bottom blocks 4, and then the two hand wheels 10 are turned. The rotating screw 7 can move downward by itself while driving the top block 8 to move, and at the same time, the right-angle groove at the bottom of the top block 8 is pressed against the shaft to be processed, thereby fixing the shaft to be processed. This fixing method not only fixes the shaft, but is also suitable for shafts of different lengths, which makes the fixing fixture more applicable.

[0019] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0020] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0022] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0023] So far, the technical solution of the utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without departing from the principle of the utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the utility model.

Claims

1. A fixing fixture for machining the outer circle of a small shaft, comprising a base (1), bottom blocks (4) are arranged on both sides of the top of the base (1), a right-angle groove for placing the shaft is opened on the top of the bottom block (4), and a fixing mechanism is arranged on the top of the bottom block (4), characterized in that: The top of the base (1) is provided with a convex groove (101), and convex blocks (2) are slidably engaged on both sides of the inside of the convex groove (101), and the two bottom blocks (4) are respectively fixedly arranged on the tops of the two convex blocks (2), and the top of the convex block (2) is threadedly connected with a knob screw (3), and the bottom end of the knob screw (3) can contact and press against the bottom of the convex groove (101).

2. The fixing fixture for machining the outer circle of a small shaft according to claim 1, characterized in that: The fixing mechanism comprises two columns (5), the two columns (5) are respectively fixedly arranged on both sides of the top of the bottom block (4), a top plate (6) is fixedly arranged on the top of the two columns (5), a screw rod (7) is threadedly connected at the central position of the top plate (6), the bottom end of the screw rod (7) is rotatably connected to a top block (8) through a bearing, and sliding sleeves (9) are fixedly arranged on both sides of the outer wall of the top block (8), and the two sliding sleeves (9) are respectively slidably connected to the outer walls of the corresponding columns (5).

3. A fixing fixture for machining the outer circle of a small shaft according to claim 2, characterized in that: The top of the base (1) is provided with sliding grooves (102) on both sides of the convex groove (101), the two sliding grooves (102) and the convex groove (101) are arranged parallel to each other, and the inside of the sliding grooves (102) is slidably connected with sliders (11) on both sides, and the sliders (11) are fixedly arranged at the bottom end of the corresponding bottom block (4).

4. A fixing fixture for machining the outer circle of a small shaft according to claim 2, characterized in that: The bottom of the top block (8) is provided with a right-angle groove for pressing the shaft, and the top end of the screw rod (7) is fixedly provided with a hand wheel (10).

5. A fixing fixture for machining the outer circle of a small shaft according to claim 4, characterized in that: The end surfaces of the convex groove (101) and the sliding block (11) are both designed to be open, and the top of the base (1) is processed with scale lines.

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