Screw rod for numerical control lathe

Abstract

The utility model provides a lead screw for a numerical control lathe, and belongs to the technical field of numerical control lathes. The problem that an existing lead screw for the numerical control lathe is prone to rusting is solved. The lead screw for the numerically controlled lathe comprises a lead screw body, a threaded groove is formed in the surface of the lead screw body, the surface of the lead screw body is sleeved with a limiting mechanism, the limiting mechanism comprises a sleeve, the surface of the lead screw body is sleeved with the sleeve, a first bolt is connected to the surface of the sleeve in a penetrating mode, and a limiting shell is fixedly connected to one side of the sleeve. The right side of the limiting shell is fixedly connected with a fixing ring, and a sponge sleeve adheres to the right side of the limiting shell. According to the screw rod, stable movement of a machine tool conveying piece is facilitated, the screw rod body is lubricated and protected, surface oxidation of the screw rod body after long-time use is avoided, and the service life of the screw rod is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of numerically controlled lathes, in particular to a screw rod for numerically controlled lathes. Background Art

[0002] CNC lathe is one of the most widely used CNC machine tools. The screw is the transmission part of the CNC lathe, which directly affects the processing accuracy and efficiency.

[0003] For example, Chinese patent literature discloses a screw assembly for a CNC lathe [application number: 202121276831.3; authorization announcement number: CN215469801U], which includes a ball screw pair, a first support assembly and a second support assembly. The ball screw pair includes a ball screw and a nut installed on the ball screw. One end of the ball screw is connected to the first support assembly, and the other end is connected to the second support assembly. The first support assembly includes a first support seat, a first pressure cover, a locking nut, a first bearing spacer, a thrust angular contact ball bearing and two first lip seals. The first bearing spacer, the thrust angular contact ball bearing, and the first lip seal are installed in a cavity surrounded by the first pressure cover and the first support seat. The first lip seal is arranged on the left and right sides of the thrust angular contact ball bearing. The second support assembly includes a second support seat, a second pressure cover, a second bearing spacer, a deep groove ball bearing, an elastic retaining ring for the shaft, and a second lip seal.

[0004] The above-mentioned screw assembly for CNC lathes has the advantage of good stability, but there is no limiting structure on the screw, which cannot limit the position of the transmission component, is not conducive to controlling the displacement distance of the transmission component, and is not convenient for lubricating the screw surface. It is easy to cause the screw to rust over a long period of time, which is not conducive to the transmission of the transmission component. Summary of the Invention

[0005] The purpose of the utility model is to provide a screw for a CNC lathe, which has the advantages of limiting the transmission parts on the screw, facilitating uniform lubrication of the screw surface, and extending the service life of the screw, and solves the problem that the position of the transmission parts cannot be limited, which is not conducive to controlling the displacement distance of the transmission parts, and at the same time it is not convenient to lubricate the screw surface, which easily causes the screw to rust over a long period of time.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a screw for a CNC lathe, comprising a screw body, a threaded groove is provided on the surface of the screw body, a limiting mechanism is sleeved on the surface of the screw body, the limiting mechanism comprises a sleeve, the sleeve is sleeved on the surface of the screw body, a first bolt is passed through the surface of the sleeve, one side of the sleeve is fixedly connected to a limiting shell, the right side of the limiting shell is fixedly connected to a fixing ring, and the right side of the limiting shell is bonded to a sponge sleeve.

[0007] By arranging the sleeve, the first bolt and the limit shell, the position of the limit shell on the surface of the screw body can be adjusted, which is convenient for locking and fixing the limit shell. The transmission parts on the screw body are limited by the limit shell, which is convenient for the stable movement of the machine tool transmission parts. By injecting lubricating oil into the inner cavity of the limit shell, the lubricating oil enters the inside of the sponge sleeve to lubricate and protect the screw body, thereby avoiding surface oxidation of the screw body due to long-term use and extending the service life of the screw.

[0008] In the screw for a CNC lathe, one end of the first bolt passes through the sleeve and contacts the screw body, and the surface of the first bolt is threadedly connected to the sleeve. By providing the first bolt, the sleeve can be locked and fixed, thereby improving the stability of the sleeve.

[0009] In the aforementioned screw for a CNC lathe, an oil inlet pipe is connected to the top of the limit housing, and a plurality of oil leakage holes are provided on the right side of the limit housing. The provision of the oil inlet pipe facilitates injection of lubricating oil into the inner cavity of the limit housing, and the provision of the oil leakage holes facilitates lubricating oil from the inner cavity of the limit housing to enter the sponge sleeve, thereby facilitating wiping and lubricating the screw, so that the lubricating oil is evenly applied to the surface of the screw body, achieving a good lubrication effect.

[0010] In the aforementioned screw for a CNC lathe, an oil delivery pipe is sleeved on the top of the oil inlet pipe. A fixing block is fixedly connected to the top of the limit housing. A second bolt is connected through the surface of the fixing block. One side of the second bolt passes through the fixing block and is connected to a clamping ring. The inner wall of the clamping ring contacts the oil delivery pipe. The provision of the oil delivery pipe facilitates communication with an external oil supply device and facilitates the delivery of lubricating oil. The provision of the second bolt, fixing block, and clamping ring enables the clamping ring to clamp the oil delivery pipe, securing the oil delivery pipe and preventing the oil delivery pipe from loosening from the oil inlet pipe.

[0011] In the aforementioned screw for a CNC lathe, a connecting sleeve is fixedly connected to the right side of the screw body, and the inner wall of the connecting sleeve is provided with an internal spline. The provision of the connecting sleeve and the internal spline facilitates connection with an external spline rod, provides a stable connection, and prevents the screw from slipping.

[0012] In the screw for a CNC lathe, a mounting plate is provided on the surface of the connecting sleeve, and a mounting hole is provided on the surface of the mounting plate. The mounting plate and the mounting hole facilitate connection with an external drive component and installation of the screw.

[0013] Compared with the existing technology, the advantages of this screw for CNC lathes are: the position of the adjustable limit shell is located on the surface of the screw body, and the transmission parts on the screw body are limited by the limit shell, which facilitates the stable movement of the machine tool transmission parts, lubricates and protects the screw body, avoids surface oxidation of the screw body due to long-term use, and extends the service life of the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the screw used in this CNC lathe.

[0015] Figure 2 This is a side view structural diagram of the screw used in this CNC lathe.

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the screw used in this CNC lathe.

[0017] Figure 4 This is a schematic diagram of the limit housing and oil leakage hole of the screw rod for this CNC lathe.

[0018] In the figure, 1. screw rod body; 2. thread groove; 3. limiting mechanism; 30. sleeve; 31. first bolt; 32. limiting shell; 33. fixing ring; 34. sponge sleeve; 35. oil inlet pipe; 36. oil leakage hole; 37. oil delivery pipe; 38. fixing block; 39. second bolt; 310. clamping ring; 4. connecting sleeve; 5. internal spline; 6. mounting plate; 7. mounting hole. DETAILED DESCRIPTION

[0019] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0020] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the screw for the CNC lathe includes a screw body 1, a threaded groove 2 is provided on the surface of the screw body 1, a limiting mechanism 3 is sleeved on the surface of the screw body 1, and the limiting mechanism 3 includes a sleeve 30, the sleeve 30 is sleeved on the surface of the screw body 1, and a first bolt 31 is connected to the surface of the sleeve 30, one side of the sleeve 30 is fixedly connected to a limiting shell 32, the right side of the limiting shell 32 is fixedly connected to a fixing ring 33, and the right side of the limiting shell 32 is bonded to a sponge sleeve 34.

[0021] One end of the first bolt 31 passes through the sleeve 30 and contacts the screw body 1. The surface of the first bolt 31 is threadedly connected to the sleeve 30. The top of the limit housing 32 is connected to the oil inlet pipe 35. The right side of the limit housing 32 is provided with a plurality of oil leakage holes 36.

[0022] An oil delivery pipe 37 is sleeved on the top of the oil inlet pipe 35, and a fixing block 38 is fixedly connected to the top of the limiting shell 32. A second bolt 39 is passed through the surface of the fixing block 38, and one side of the second bolt 39 passes through the fixing block 38 and is connected to a clamping ring 310. The inner wall of the clamping ring 310 is in contact with the oil delivery pipe 37.

[0023] The right side of the screw body 1 is fixedly connected with a connecting sleeve 4, and the inner wall of the connecting sleeve 4 is provided with an internal spline 5. The surface of the connecting sleeve 4 is sleeved with a mounting plate 6, and the surface of the mounting plate 6 is provided with a mounting hole 7.

[0024] During use, the movable limiting shell 32 drives the sleeve 30 to move, adjusts the position of the limiting shell 32, rotates the first bolt 31 to be threadedly connected with the sleeve 30, so that the first bolt 31 is pressed against the screw body 1, fixes the sleeve 30 and the limiting shell 32, and limits the moving distance of the transmission component on the screw body 1 through the limiting shell 32.

[0025] The oil delivery pipe 37 is connected to the external oil delivery device. When the screw rod needs to be lubricated, the lubricating oil is delivered through the oil delivery device. The lubricating oil passes through the oil delivery pipe 37, the oil inlet pipe 35, the limit shell 32, and the oil leakage hole 36 in sequence and enters the sponge sleeve 34. The first bolt 31 is rotated to separate it from the screw rod body 1. The limit shell 32 is manually moved to drive the sponge sleeve 34 to move. The internal lubricating oil is evenly applied to the surface of the screw rod body 1 through the sponge sleeve 34 to evenly lubricate the screw rod body 1.

[0026] Matters not described in detail in this specification constitute prior art known to those skilled in the art. The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art to which the present invention relates may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A screw for a CNC lathe, comprising a screw body (1), characterized in that: A thread groove (2) is provided on the surface of the screw body (1), and a limiting mechanism (3) is sleeved on the surface of the screw body (1). The limiting mechanism (3) comprises a sleeve (30), the sleeve (30) is sleeved on the surface of the screw body (1), a first bolt (31) is passed through the surface of the sleeve (30), one side of the sleeve (30) is fixedly connected to a limiting shell (32), the right side of the limiting shell (32) is fixedly connected to a fixing ring (33), and the right side of the limiting shell (32) is bonded to a sponge sleeve (34).

2. The screw for a CNC lathe according to claim 1, characterized in that: One end of the first bolt (31) passes through the sleeve (30) and contacts the screw rod body (1), and the surface of the first bolt (31) is threadedly connected to the sleeve (30).

3. The screw for a CNC lathe according to claim 1, characterized in that: The top of the limiting shell (32) is connected to an oil inlet pipe (35), and the right side of the limiting shell (32) is provided with an oil leakage hole (36), and the number of the oil leakage holes (36) is several.

4. The screw for a CNC lathe according to claim 3, characterized in that: The top of the oil inlet pipe (35) is sleeved with an oil delivery pipe (37), the top of the limit shell (32) is fixedly connected to a fixing block (38), the surface of the fixing block (38) is penetrated and connected with a second bolt (39), one side of the second bolt (39) penetrates the fixing block (38) and is connected to a clamping ring (310), and the inner wall of the clamping ring (310) is in contact with the oil delivery pipe (37).

5. The screw for a CNC lathe according to claim 1, characterized in that: A connecting sleeve (4) is fixedly connected to the right side of the screw rod body (1), and an inner spline (5) is provided on the inner wall of the connecting sleeve (4).

6. The screw for a CNC lathe according to claim 5, characterized in that: A mounting plate (6) is sleeved on the surface of the connecting sleeve (4), and a mounting hole (7) is opened on the surface of the mounting plate (6).

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