Rotation maintaining and limiting device for machine tool cantilever

Abstract

The invention discloses a machine tool cantilever rotation maintaining and limiting device which comprises a suspension arm, a fixing pipe fixedly connected to one end of the suspension arm and a rotating shaft rotationally connected to an inner ring, the outer side of the rotating shaft is slidably connected with a limiting shaft, and the limiting shaft penetrates into the side wall of the fixing pipe. A threaded piece is assembled at the position where the fixing pipe is inserted into the limiting shaft and is in threaded connection with the limiting shaft, and a single bolt is installed at the end, opposite to the rotating shaft, of the fixing pipe. The single bolt is in threaded connection with the inner end of the fixing pipe, meanwhile, the left bolt and the right bolt are symmetrically arranged at the inner end of the rotating shaft, and the single bolt, the left bolt and the right bolt are located on the same-radius circular path. The rotating angle is limited through physical collision between the single bolt and the left bolt and between the single bolt and the right bolt, so that the situation of repeated rotation in one direction is avoided, the problem of winding of internal circuits of the fixed pipe and the rotating shaft is fundamentally solved, the service life of equipment is prolonged, and the safety of personnel is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of machine tool cantilevers, in particular to a rotation holding and limiting device for a machine tool cantilever. Background Art

[0002] In the design and application of machine tool cantilevers, the operation box, as an important control component, is usually installed on the cantilever to facilitate the operator to control and monitor the machine tool. However, in actual use, the operator often needs to rotate the operation box to adjust its direction so as to operate in different working positions. Although this operation brings flexibility, it also brings a problem: during the rotation of the operation box, since the circuit is set inside, it is impossible to intuitively understand the current rotation angle, and it will rotate repeatedly in one direction, which is easy to cause the circuit connected inside the cantilever to get entangled. The circuit entanglement will not only affect the normal operation of the machine tool, but also may cause the circuit to wear and break, and even cause safety hazards. In order to solve this problem, although there are some designs on the market that try to reduce circuit entanglement by improving the circuit layout or using special materials, these methods are often limited in effect and increase manufacturing costs and complexity. Therefore, a machine tool cantilever rotation retention limit device is proposed. Summary of the invention

[0003] The present invention aims to solve one of the technical problems existing in the prior art or related technology.

[0004] To this end, the technical solution adopted in the present invention is: A machine tool cantilever rotation and limiting device comprises a boom, a fixed tube fixedly connected to one end of the boom, and a rotating shaft rotatably connected to an inner ring, wherein the outer side of the rotating shaft is slidably connected to the limiting shaft, the limiting shaft penetrates into the side wall of the fixed tube, and a threaded part is assembled at the position where the fixed tube is inserted into the limiting shaft and is threadedly connected to the limiting shaft, a single bolt is installed on the opposite ends of the fixed tube and the rotating shaft, and a left bolt and a right bolt are symmetrically arranged on the opposite ends of the rotating shaft and the fixed tube, the single bolt is located at a half-circle position of the left bolt and the right bolt, and the position of the single bolt corresponds to the left bolt and the right bolt.

[0005] Preferably, a locking sleeve is clamped at the bottom end of the limiting shaft.

[0006] Preferably, the number of combinations of the limiting shaft, the locking sleeve and the threaded member is three, and the three combinations of the limiting shaft, the locking sleeve and the threaded member are evenly distributed on the circumference of the contact position between the rotating shaft and the fixed tube.

[0007] Preferably, a screw hole is provided on a side of the threaded member.

[0008] Preferably, a locking column is clamped on the side of the boom, the bottom end of the locking column penetrates the fixing tube, and the number of the locking columns is three groups evenly arranged on the side of the boom.

[0009] Preferably, the fixed tube and the rotating shaft are designed as concentric circles, and the aperture of the fixed tube is smaller than the aperture of the rotating shaft.

[0010] By adopting the above technical solution, the beneficial effects achieved by the present invention are: In the present invention, a single bolt is threadedly connected to the inner end of the fixed tube, and a left bolt and a right bolt are symmetrically arranged on the inner end of the rotating shaft, and the single bolt, the left bolt and the right bolt are located on a circular path with the same radius. Therefore, when the fixed tube or the rotating shaft is rotated, the physical collision between the single bolt and the left bolt and the right bolt is used to limit the rotation angle, thereby avoiding repeated rotation in one direction, fundamentally eliminating the problem of internal line entanglement of the fixed tube and the rotating shaft, thereby improving the service life of the equipment and ensuring the safety of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A side cross-sectional schematic diagram of an embodiment of the present invention; Figure 2 It is a front cross-sectional schematic diagram of an embodiment of the present invention.

[0012] Reference numerals: 110, boom; 111, positioning column; 120, fixed pipe; 130, rotating shaft; 140, limiting shaft; 150, positioning sleeve; 160, threaded part; 170, single bolt; 180, left bolt; 190, right bolt. DETAILED DESCRIPTION

[0013] To make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in combination with specific implementations and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0014] A machine tool cantilever rotation retaining and limiting device provided by some embodiments of the present invention will be described below in conjunction with the accompanying drawings. Example

[0015] Combination Figure 1-2As shown, a machine tool cantilever rotation and limiting device provided by the present invention comprises a suspension arm 110, a fixed tube 120 fixedly connected to one end of the suspension arm 110, and a rotating shaft 130 rotatably connected to the inner ring of 12, a clamping column 111 is clamped on the side of the suspension arm 110, and the bottom end of the clamping column 111 passes through the fixed tube 120, and the number of the clamping columns 111 is three groups evenly arranged on the side of the suspension arm 110, the fixed tube 120 and the rotating shaft 130 are concentric circle designs, and the aperture of the fixed tube 120 is smaller than the aperture of the rotating shaft 130, the outer side of the rotating shaft 130 is slidably connected to a limiting shaft 140, the bottom end of the limiting shaft 140 is clamped with a clamping sleeve 150, the limiting shaft 140 passes through the side wall of the fixed tube 120, and the fixed tube 120 is inserted into the limiting The position of the positioning shaft 140 is equipped with a threaded member 160 which is threadedly connected to the limiting shaft 140. There are three combinations of the limiting shaft 140, the locking sleeve 150 and the threaded member 160. The three combinations of the limiting shaft 140, the locking sleeve 150 and the threaded member 160 are evenly distributed on the circumference of the contact position between the rotating shaft 130 and the fixed tube 120. Screw holes are provided on the side of the threaded member 160. A single bolt 170 is installed on the opposite ends of the fixed tube 120 and the rotating shaft 130, and a left bolt 180 and a right bolt 190 are symmetrically arranged on the opposite ends of the rotating shaft 130 and the fixed tube 120. The single bolt 170 is located at a half-circle position of the left bolt 180 and the right bolt 190, and the position of the single bolt 170 corresponds to the left bolt 180 and the right bolt 190.

[0016] Specifically, the position of the rotating shaft 130 is limited by using three sets of limiting shafts 140, the positioning sleeves 150 and the screw members 160, so that the rotating shaft 130 always maintains a concentric circle with the fixed tube 120, thereby avoiding rotation deviation and reducing its accuracy. At the same time, the tightness of the connection between the fixed tube 120 and the rotating shaft 130 can be ensured, avoiding structural disconnection or a large change in the distance between the structures, further improving the accuracy of the device; In addition, the fixed tube 120 and the rotating shaft 130 can be separated by rotating the threaded member 160 , so that subsequent inspection and maintenance are more convenient and the use flexibility of the device is improved.

[0017] The working principle and use process of the present invention are as follows: first, the device is installed in the installation order, and the line is protected therein, and then it is put into use. When the angle needs to be rotated, the driving member drives the rotating shaft 130 to rotate. As the rotation proceeds, the line begins to twist slightly. As the angle increases, the single bolt 170 collides with the left bolt 180 or the right bolt 190, causing the rotation process to terminate, representing the maximum limit of the rotation angle. At this point, it cannot continue to rotate, and the protection line will no longer twist. After the rotation operation is completed, it is rotated and reset. Finally, the device can be inspected and maintained regularly.

[0018] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A machine tool cantilever rotation retaining limit device, comprising a cantilever arm (110), a fixed tube (120) fixedly connected to one end of the cantilever arm (110), and a rotating shaft (130) rotatably connected to the inner ring of the cantilever arm (12), characterized in that: The outer side of the rotating shaft (130) is slidably connected to a limit shaft (140), the limit shaft (140) penetrates into the side wall of the fixed tube (120), and a threaded member (160) is installed at the position where the fixed tube (120) is plugged into the limit shaft (140) and is threadedly connected to the limit shaft (140), a single bolt (170) is installed on the opposite ends of the fixed tube (120) and the rotating shaft (130), and a left bolt (180) and a right bolt (190) are symmetrically arranged on the opposite ends of the rotating shaft (130) and the fixed tube (120), the single bolt (170) is located at a half-circle position of the left bolt (180) and the right bolt (190), and the position of the single bolt (170) corresponds to the left bolt (180) and the right bolt (190).

2. The machine tool cantilever rotation holding limit device according to claim 1, characterized in that: The bottom end of the limiting shaft (140) is clamped with a clamping sleeve (150).

3. The machine tool cantilever rotation holding limit device according to claim 1, characterized in that: The number of combinations of the limiting shaft (140), the locking sleeve (150) and the threaded member (160) is three groups, and the three groups of combinations of the limiting shaft (140), the locking sleeve (150) and the threaded member (160) are evenly distributed on the circumference of the contact position between the rotating shaft (130) and the fixed tube (120).

4. The machine tool cantilever rotation holding limit device according to claim 1, characterized in that: A screw hole is provided on the side of the threaded member (160).

5. The machine tool cantilever rotation holding limit device according to claim 1, characterized in that: A locking column (111) is clamped on the side of the suspension arm (110), the bottom end of the locking column (111) penetrates the fixing pipe (120), and the number of the locking columns (111) is three groups evenly arranged on the side of the suspension arm (110).

6. The machine tool cantilever rotation holding limit device according to claim 1, characterized in that: The fixed tube (120) and the rotating shaft (130) are designed as concentric circles, and the hole diameter of the fixed tube (120) is smaller than the hole diameter of the rotating shaft (130).

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