Shaft knurling mechanism

Abstract

The utility model belongs to the technical field of shaft machining, and particularly relates to a shaft knurling mechanism which comprises a machine frame, the machine frame is provided with two opposite installation positions, and an installation space is formed between the two installation positions. The first rolling device is arranged at a mounting position of the rack, the first rolling device comprises a first rolling die, the first rolling die is provided with a first knurling surface and a first supporting surface, and a first guide surface is formed between the first supporting surface and the first knurling surface; the second rolling device is arranged at the other mounting position of the rack and comprises a second rolling die, the second rolling die is provided with a second knurling surface and a second supporting surface, and a second guide surface is formed between the second supporting surface and the second knurling surface; a clamping position is defined by the second supporting face, the first supporting face, the second guiding face and the first guiding face. And the translation mechanism is connected with the first rolling device and is used for driving the first rolling device and the second rolling device to perform relative translation. And the problem that the shaft knurls are easy to deform is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of shaft processing, and in particular relates to a shaft knurling mechanism. Background Art

[0002] Knurling refers to a processing method that uses a knurling tool to roll out patterns on the surface of a workpiece. When machining shaft parts in the field of mechanical processing, it is often necessary to knurl the outer diameter of the shaft, such as straight lines, mesh patterns, etc., to increase the friction of the shaft and play an anti-slip role.

[0003] For example, the Chinese patent document with publication number CN212264305U discloses a camshaft spindle knurling mechanism, including a frame, a platform fixed at the lower part of the front side of the frame, a rotary drive motor fixed at the bottom of the left end of the platform, a three-claw chuck fixed after the rotating shaft of the rotary drive motor moves from bottom to top through the platform; a support frame is slidably connected to the front side of the frame above the three-claw chuck, a first driving structure for driving the support frame to slide up and down is installed on the frame, a top block for tightening the camshaft spindle is rotatably connected on the lower end surface of the support frame, and the top block is coaxially arranged with the three-claw chuck; a sliding seat is slidably connected to the upper surface of the right part of the platform, a second driving structure for driving the sliding seat to slide left and right is installed on the platform, a pneumatic clamp is fixed on the sliding seat, and knurling wheels are rotatably connected to the two clamping arms of the pneumatic clamp. Automated knurling of the camshaft spindle is realized.

[0004] In the technical solution of the above patent document, the knurling mechanism is provided with three driving parts and a knurling wheel. After the shaft is clamped by a three-claw chuck and fixed by a top block, the knurling wheel is driven to knurl one side of the shaft, and then the driving motor is rotated to make the shaft rotate to complete the effect of knurling the shaft by the knurling wheel. This knurling structure is complex, and knurling requires driving and adjusting multiple sliding structures at a time, which is time-consuming and reduces the knurling efficiency. Especially when processing a thinner shaft, knurling with only one knurling wheel is prone to cause shaft deformation. Utility Model Content

[0005] The utility model aims to provide a shaft knurling mechanism to solve the problem that the existing shaft knurling mechanism easily causes shaft deformation when knurling the outer surface of the shaft.

[0006] To achieve the above-mentioned purpose, an embodiment of the utility model provides a shaft knurling mechanism, comprising a frame, wherein the frame is provided with two opposite mounting positions, and an installation space is formed between the two mounting positions;

[0007] A first rolling device is arranged at an installation position of the frame, the first rolling device comprises a first rolling die, the first rolling die is provided with a first knurled surface and a first supporting surface, the first supporting surface is lower than the first knurled surface, and a first guiding surface is formed between the first supporting surface and the first knurled surface;

[0008] A second rolling device is arranged at another installation position of the frame, the second rolling device comprises a second rolling die, the second rolling die is provided with a second knurled surface and a second supporting surface, the second supporting surface is lower than the second knurled surface, and a second guiding surface is formed between the second supporting surface and the second knurled surface; the second supporting surface, the first supporting surface, the second guiding surface, and the first guiding surface form a clamping position; and,

[0009] The translation mechanism is connected to the first rolling device and is used to drive the first rolling device and the second rolling device to translate relative to each other.

[0010] Furthermore, the first rolling device and the second rolling device are arranged opposite to each other up and down.

[0011] Furthermore, the second rolling device also includes a die base, a mounting cavity is provided in the die base, and one end of the second rolling die extends into the mounting cavity.

[0012] Furthermore, an adjusting mechanism is provided in the installation cavity, and the bottom end of the second rolling die is supported on the top end of the adjusting mechanism; the adjusting mechanism is used to adjust the height of the second rolling die.

[0013] Furthermore, a measuring meter is provided on the frame, and the measuring meter has a detection end for detecting the height position of the knurled shaft.

[0014] Furthermore, the translation mechanism includes a motor, a screw assembly and a translation seat, the screw assembly is arranged on the frame, the translation seat is connected to the screw assembly, and the motor is connected to the screw assembly for driving the screw assembly to translate the translation seat; the first rolling mold is arranged on one side of the translation seat.

[0015] Furthermore, a clearance gap is provided on the same side of the first rolling die and the second rolling die, and the two clearance gaps form a finger clearance position.

[0016] The above one or more technical solutions in the shaft knurling mechanism provided by the embodiment of the utility model have at least the following technical effects:

[0017] In the present shaft knurling mechanism, the first rolling die is provided with a first knurling surface, a first supporting surface and a first guiding surface, and the second rolling die is provided with a second knurling surface, a second supporting surface and a second guiding surface. The second supporting surface, the first supporting surface, the second guiding surface and the first guiding surface form a clamping position. When knurling the shaft, the shaft to be knurled can be placed in this clamping position, and then the first rolling device and the second rolling device are driven to translate relative to each other through the translation mechanism. Under the action of the first guiding surface and the second guiding surface, the shaft to be knurled can guide the roller to move between the first knurling surface and the second knurling surface, and the first knurling surface and the second knurling surface are staggered to realize the extrusion of the outer surface of the roller and form the knurling pattern. During the knurling process, the two knurling dies always play the role of knurling extrusion support for the shaft, avoiding the problem of shaft deformation, and having two knurling surfaces improves the knurling precision and knurling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A three-dimensional diagram of the shaft knurling mechanism provided in an embodiment of the utility model.

[0020] Figure 2 The shaft knurling mechanism provided by the embodiment of the utility model Figure 1 A is an enlarged view of the middle image.

[0021] Figure 3 A partial structural diagram of the shaft knurling mechanism provided in an embodiment of the utility model.

[0022] Figure 4 The shaft knurling mechanism provided by the embodiment of the utility model Figure 2 Enlarged view of B.

[0023] In the figure: 10, frame, 11, mounting position, 12, mounting space, 20, first rolling device, 21, first rolling die, 22, first knurled surface, 23, first supporting surface, 24, first guide surface, 30, second rolling device, 31, second rolling die, 32, second knurled surface, 33, second supporting surface, 34, second guide surface, 35, clamping position, 36, die base, 37, mounting cavity, 38, air avoidance gap, 40, translation mechanism, 41, motor, 42, screw assembly, 43, translation seat, 50, measuring meter, 60, adjustment mechanism. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0025] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0027] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0028] In one embodiment of the shaft knurling mechanism of the utility model, please refer to Figures 1 to 4The shaft knurling mechanism of this embodiment includes a frame 10, which is provided with two opposite mounting positions 11, and a mounting space 12 is formed between the two mounting positions 11; a first rolling device 20 is provided at one mounting position of the frame 10, and the first rolling device 20 includes a first rolling die 21, and the first rolling die 21 is provided with a first knurling surface 22 and a first supporting surface 23, the first supporting surface 23 is lower than the first knurling surface 22, and a first guiding surface 24 is formed between the first supporting surface 22 and the first knurling surface 23; a second rolling device 30 is provided at another mounting position of the frame 10. The second rolling device 30 includes a second rolling die 31, the second rolling die 31 is provided with a second knurled surface 32 and a second supporting surface 33, the second supporting surface 33 is lower than the second knurled surface 32, and a second guide surface 34 is formed between the second supporting surface 33 and the second knurled surface 32; the second supporting surface 33, the first supporting surface 23, the second guiding surface 34, and the first guiding surface 24 form a clamping position 35; and the translation mechanism 40 is connected to the first rolling device 20, for driving the first rolling device 20 and the second rolling device 30 to translate relative to each other.

[0029] Specifically, the first rolling die 21 is provided with a first knurled surface 22, a first supporting surface 23 and a first guiding surface 24, and the second rolling die 31 is provided with a second knurled surface 32, a second supporting surface 33 and a second guiding surface 34. The second supporting surface 33, the first supporting surface 23, the second guiding surface 34 and the first guiding surface 24 form a clamping position 35. When knurling the shaft, the shaft to be knurled can be placed in the clamping position 35, and then the first rolling device 20 and the second rolling device 21 are driven to translate relative to each other through the translation mechanism 40. Under the action of the first guiding surface 24 and the second guiding surface 34, the roller can be guided to move between the first knurled surface 22 and the second knurled surface 32, and the outer surface of the roller is squeezed and the knurled pattern is formed by staggered movement on the first knurled surface 22 and the second knurled surface 32. During the knurling process, the two knurling dies always play the role of knurling extrusion support for the shaft, avoiding the problem of shaft deformation, and having two knurled surfaces improves the knurling precision and knurling efficiency.

[0030] Further, the first rolling device 20 and the second rolling device 30 are arranged opposite to each other up and down. Specifically, the upper and lower relative arrangement can keep the shaft stable during the knurling movement.

[0031] Further, the second rolling device 30 further includes a die holder 36, in which a mounting cavity 37 is provided, and one end of the second rolling die 31 extends into the mounting cavity 37. Specifically, the die holder 36 is provided to improve the stability of the second knurling die 31.

[0032] Furthermore, an adjustment mechanism 60 is further provided in the installation cavity 37, and the bottom end of the second rolling die 31 is supported on the top end of the adjustment mechanism 60; the adjustment mechanism 60 is used to adjust the height of the second rolling die 31. Specifically, by adjusting the height of the second rolling die 31 through the adjustment mechanism 60, the spacing between the first rolling die 21 and the second rolling die 31 is adjusted, so as to meet the knurling requirements of the outer surface of the shaft with different diameters, or adjust the knurling depth of the outer surface of the shaft.

[0033] Further, a measuring gauge 50 is also provided on the frame 10, and the measuring gauge 50 has a detection end for detecting the height position of the knurled shaft. Specifically, the measuring gauge 50 can detect the height position of the knurled shaft, so as to confirm the knurling depth of the outer surface of the knurled shaft.

[0034] Further, the translation mechanism 40 includes a motor 41, a screw assembly 42 and a translation seat 43. The screw assembly 42 is arranged on the frame 10, the translation seat 43 is connected to the screw assembly 42, and the motor 41 is connected to the screw assembly 42 to drive the screw assembly 42 to translate the translation seat 43. The first rolling die 21 is arranged on one side of the translation seat 43. Specifically, the motor 41 can drive the screw assembly 42 to make the translation seat 43 drive the first rolling die 21 to reciprocate in the direction of the second rolling die 31.

[0035] Furthermore, a clearance gap 38 is provided on the same side of the first rolling die 21 and the second rolling die 31, and the two clearance gaps 38 form a finger clearance position. Specifically, the clearance gap 38 allows manual or mechanical hand to place the shaft in the clamping position 35.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shaft knurling mechanism, characterized in that: include: A frame, wherein the frame is provided with two opposite mounting positions, and an installation space is formed between the two mounting positions; A first rolling device is arranged at an installation position of the frame, the first rolling device comprises a first rolling die, the first rolling die is provided with a first knurled surface and a first supporting surface, the first supporting surface is lower than the first knurled surface, and a first guiding surface is formed between the first supporting surface and the first knurled surface; A second rolling device is arranged at another installation position of the frame, the second rolling device comprises a second rolling die, the second rolling die is provided with a second knurled surface and a second supporting surface, the second supporting surface is lower than the second knurled surface, and a second guiding surface is formed between the second supporting surface and the second knurled surface; the second supporting surface, the first supporting surface, the second guiding surface, and the first guiding surface form a clamping position; and, The translation mechanism is connected to the first rolling device and is used to drive the first rolling device and the second rolling device to translate relative to each other.

2. The shaft knurling mechanism according to claim 1, characterized in that: The first rolling device and the second rolling device are arranged opposite to each other up and down.

3. The shaft knurling mechanism according to claim 1 or 2, characterized in that: The second rolling device also includes a die base, a mounting cavity is provided in the die base, and one end of the second rolling die extends into the mounting cavity.

4. The shaft knurling mechanism according to claim 3, characterized in that: An adjusting mechanism is also provided in the installation cavity, and the bottom end of the second rolling die is supported on the top end of the adjusting mechanism; the adjusting mechanism is used to adjust the height of the second rolling die.

5. The shaft knurling mechanism according to claim 4, characterized in that: The frame is also provided with a measuring meter, which has a detection end for detecting the height position of the knurled shaft.

6. The shaft knurling mechanism according to claim 1, characterized in that: The translation mechanism comprises a motor, a screw assembly and a translation seat, wherein the screw assembly is arranged on the frame, the translation seat is connected to the screw assembly, and the motor is connected to the screw assembly to drive the screw assembly to translate the translation seat; The first rolling die is arranged on one side of the translation seat.

7. The shaft knurling mechanism according to claim 1, characterized in that: A clearance gap is provided on the same side of the first rolling die and the second rolling die, and the two clearance gaps form a finger clearance position.

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