Manufacturing method of structural form of slideway strip in linear motion pair

Abstract

The invention provides a manufacturing method of a structural form of a slideway strip in a linear motion pair, and relates to the technical field of the machine tool equipment industry. The manufacturing method comprises the steps of cold rolling, roll drawing, annealing, surface rust removal, surface pretreatment and drawing to obtain the finished product slideway strip, specifically, the material round steel is subjected to cold rolling, a workpiece obtained after cold rolling is subjected to roll drawing forming, the workpiece obtained after roll drawing is subjected to annealing treatment, the workpiece obtained after annealing is subjected to surface rust removal, and the workpiece obtained after surface rust removal is subjected to surface pretreatment. And drawing the workpiece subjected to surface pretreatment, and repeating the procedures of annealing, surface rust removal, surface pretreatment and drawing to obtain a finished product of the slideway strip. A cold machining process is utilized in the forming process, the extensibility of materials is utilized, the machining process is simple, and machining is easy; a method of not removing materials is used for processing, so that the material utilization rate is high; round steel is adopted for normal-temperature rolling and rolling drawing, raw material consumption is low, the finished slideway strip is good in surface smoothness, follow-up finish machining such as quenching can be directly carried out, and cost is low.

Description

Technical Field

[0001] The invention relates to the technical field of machine tool equipment industry, and in particular to a method for manufacturing the structural form of a slideway strip in a linear motion pair. Background Art

[0002] Linear motion pairs (linear rail sliders) are widely used in machine tools, molds, automation equipment, and also in the field of robots. They are used to achieve high-precision, heavy-load linear motion. They can also be used in crank slider mechanisms to convert rotary motion into linear motion.

[0003] like Figure 1 As shown, the currently commonly used linear running pair includes a slide bar 1 and a slider housing 2, wherein the slide bar 1 is made of high carbon steel with a complex shape. It is not only difficult to process using traditional mechanical processing methods to remove materials, but also wastes materials, and its material utilization rate can only reach 40%. Summary of the invention

[0004] The present invention provides a method for manufacturing the structural form of a slideway strip in a linear motion pair. The prior art has the problems of being difficult to process, wasting materials, and the material utilization rate can only reach 40%.

[0005] In order to solve the above-mentioned invention problems, the technical solutions provided by the present invention are as follows:

[0006] A method for manufacturing a structural form of a slideway strip in a linear motion pair, the manufacturing method comprising:

[0007] Cold rolling, cold rolling the steel;

[0008] Rolling, rolling the cold-rolled workpiece into shape;

[0009] Annealing: the workpiece is annealed after rolling;

[0010] Surface rust removal: rust removal treatment is performed on the surface of the workpiece after annealing;

[0011] Surface pretreatment: pretreat the workpiece after rust removal;

[0012] Drawing, drawing the workpiece after surface pretreatment;

[0013] Repeat the above annealing, surface rust removal, surface pretreatment and drawing processes to obtain a finished slideway strip.

[0014] Preferably, the surface pretreatment rolling head is used to roll the workpiece after the surface rust is removed.

[0015] Preferably, the surface pretreatment also includes sandblasting and rust removal, and the workpiece behind the rolling head is subjected to sandblasting and rust removal treatment.

[0016] Preferably, the surface pretreatment also includes surface treatment, and the workpiece is subjected to surface treatment after sandblasting and rust removal.

[0017] Preferably, in the rolling process, four-roll drawing is adopted.

[0018] Preferably, in the annealing process, the rolled workpiece is heated to 720±40 degrees for a holding time of 4-12 hours.

[0019] Preferably, in the annealing step, an annealing furnace is used to anneal the workpiece after rolling.

[0020] Preferably, in the rolling process, room temperature rolling is adopted.

[0021] Preferably, in the rolling process, the cold-rolled workpiece is rolled and formed by a rolling machine.

[0022] Preferably, in the cold rolling process, the raw material is round steel with a suitable diameter.

[0023] Compared with the prior art, the above technical solution has at least the following beneficial effects:

[0024] The above scheme utilizes cold rolling, rolling, annealing, surface rust removal, surface pretreatment and drawing processes to obtain the finished slide bar. The forming process mainly utilizes the elongation properties of the material and adopts cold processing technology. The processing process is simple, the production efficiency is high and the cost is low. It is processed by a method that does not remove materials, and the material utilization rate is high. Round steel is rolled at room temperature, rolled at room temperature, and cold drawn at room temperature. The production is carried out by a combination of technology, the raw material consumption is low, the surface finish of the finished slide bar is good, and quenching and other subsequent finishing processes can be directly carried out at low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. 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 creative work.

[0026] Figure 1 It is a structural schematic diagram of the slide bar and the slider housing;

[0027] Figure 2 It is a structural schematic diagram of a workpiece after cold rolling of the present invention;

[0028] Figure 3 It is a schematic structural diagram of a workpiece after rolling and drawing of the present invention;

[0029] Figure 4 It is a structural schematic diagram of a workpiece after one-time drawing of the present invention;

[0030] Figure 5 It is a schematic structural diagram of a workpiece after secondary drawing of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the finished slideway strip of the present invention;

[0032] Figure 7 is a flow chart of the manufacturing method of the present invention;

[0033] Figure 8 Flow chart of the surface pretreatment process of the present invention.

[0034] The accompanying drawings are described as follows:

[0035] 1. slide rail; 2. slider housing; 101. first concave surface; 102. first convex surface; 103. inclined surface; 104. second convex surface; 105. second concave surface; 106. third convex surface; 107. third concave surface; 108. fourth convex surface; 109. fourth concave surface;

[0036] 1a, workpiece after cold rolling; 1b, workpiece after rolling; 1c, workpiece after primary drawing; 1d, workpiece after secondary drawing. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "one" or "the" do not indicate a quantitative limitation, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0039] It should be noted that the terms "up", "down", "left", "right", "front", "back", etc. used in the present invention are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0040] Embodiment 1

[0041] like Figure 7 and Figure 8 As shown, the linear motion pair includes a slide bar 1 and a slider housing 2. This embodiment provides a method for manufacturing the structural form of the slide bar in the linear motion pair, which is applicable to slide bars of various structural forms, not limited to the slide bar shape provided in this embodiment. The manufacturing method includes:

[0042] S100, cold rolling, cold rolling the steel; utilizing the plastic deformation of the steel to reduce the waste of cutting; the raw material of this embodiment is round steel with matching diameter.

[0043] S200, rolling, rolling and forming the workpiece after cold rolling; this embodiment uses a rolling machine with four rolls for normal temperature rolling and forming.

[0044] S300, annealing, the workpiece is annealed after rolling and drawing, and stress relief annealing is performed;

[0045] S400, surface rust removal, performing surface rust removal treatment on the workpiece after annealing;

[0046] S500, surface pretreatment, performing surface pretreatment on the workpiece after surface rust removal;

[0047] S600, drawing, drawing the workpiece after surface pretreatment, and forming by utilizing plastic deformation of the material;

[0048] S700, repeating the above annealing, surface rust removal, surface pretreatment and drawing processes to obtain a finished slideway strip.

[0049] Specifically, the surface pretreatment in step S500 includes:

[0050] S510, rolling the workpiece after surface rust removal;

[0051] S520, sandblasting and rust removal, performing sandblasting and rust removal treatment on the workpiece behind the rolling head;

[0052] S530, surface treatment, surface treatment of the workpiece after sandblasting and rust removal.

[0053] In the rolling process of step S200, four-roller drawing is adopted.

[0054] In the annealing process of step S300, the rolled workpiece is heated to 720±40 degrees for 4-12 hours.

[0055] In this embodiment, the finished slide bar 1 is obtained by cold rolling, rolling, annealing, surface rust removal, surface pretreatment and drawing processes. The forming process mainly utilizes cold processing technology and the extensibility of the material. The processing process is simple and easy to process. It is processed by a method that does not remove material, and the material utilization rate is high. Round steel is used for rolling at room temperature, rolling at room temperature, and cold drawing at room temperature. The production is carried out by a combination of technology. The raw material consumption is low, the surface finish of the finished slide bar is good, and it can be directly subjected to subsequent fine processing such as quenching, and the cost is low.

[0056] Embodiment 2

[0057] like Figure 1-8 As shown, this embodiment provides a method for manufacturing the structural form of the slideway strip in a linear motion pair, and the finished product is as follows Figure 7 As shown, the slide bar includes a first concave surface 101, a first convex surface 102, an inclined surface 103, a second convex surface 104, a second concave surface 105, a third convex surface 106, a third concave surface 107, a fourth convex surface 108, and a fourth concave surface 109 which are symmetrically connected in sequence.

[0058] The production method comprises:

[0059] By cold rolling in step S100, round steel with a diameter of 9 mm to 10 mm is rolled into a shape, and a cold rolled workpiece 1a is obtained after rolling. The shape of the cold rolled workpiece is as follows: Figure 2 The slideway strip is formed by rolling the inclined surface, and the width of the workpiece a1 after cold rolling is 8.5±0.2 and the height is 9.15±0.2;

[0060] By rolling in step S200, the cold rolled workpiece a1 is rolled to obtain a rolled workpiece 1b, wherein the width of the rolled workpiece 1b is 7.81±0.2 and the height is 8.74±0.2;

[0061] By annealing in step S300, the workpiece 1b after rolling and drawing is annealed, heated to 720±40 degrees, and kept warm for 4-12 hours to perform stress relief annealing;

[0062] Utilizing step S400 to remove rust from the surface, the annealed workpiece is subjected to sandblasting to remove rust from the surface;

[0063] In step S500, the surface pretreatment is performed on the workpiece after the surface rust is removed.

[0064] The workpiece after surface pretreatment is drawn once in step S600 to obtain a workpiece 1c after drawing once. The width of the workpiece 1c after drawing once is 7.13±0.2 and the height is 8.33±0.2;

[0065] The workpiece 1c after primary drawing is annealed, surface rust removed, and surface pretreated in step S300, and then secondary drawing is performed in step S600 to obtain a workpiece 1d after secondary drawing. The width of the workpiece 1d after secondary drawing is 7.23±0.2 and the height is 7.83±0.2;

[0066] After the secondary drawing, the workpiece 1d is annealed, surface rust-removed, and surface pretreated in step S300, and then drawn three times in step S600 to obtain a finished slideway bar 1, the width of which is 6.67±0.2 and the height is 7.43±0.2.

[0067] Through the drawing process of this embodiment, the required size, shape, accuracy, and surface finish are obtained by drawing without removing material, and the finished slideway strip 1 reaches the state before fine processing.

[0068] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A method for manufacturing a structural form of a slideway strip in a linear motion pair, characterized in that: The production method comprises: Cold rolling, cold rolling the steel; Rolling, rolling the cold-rolled workpiece into shape; Annealing: the workpiece is annealed after rolling; Surface rust removal: rust removal treatment is performed on the surface of the workpiece after annealing; Surface pretreatment: pretreat the workpiece after rust removal; Drawing, drawing the workpiece after surface pretreatment; Repeat the above annealing, surface rust removal, surface pretreatment and drawing processes to obtain a finished slideway strip.

2. The method for manufacturing the structural form of the slideway strip in the linear motion pair according to claim 1, characterized in that: The surface pretreatment rolling head is used to roll the workpiece after the surface rust is removed.

3. The method for manufacturing the structural form of the slideway strip in the linear motion pair according to claim 2, characterized in that: The surface pretreatment also includes sandblasting and rust removal, and the workpiece behind the rolling head is subjected to sandblasting and rust removal treatment.

4. The method for manufacturing the structural form of the slideway strip in the linear motion pair according to claim 3, characterized in that: The surface pretreatment also includes surface treatment, which is to perform surface treatment on the workpiece after sandblasting and rust removal.

5. The method for manufacturing the structural form of the slideway strip in the linear motion pair according to claim 1, characterized in that: In the rolling process, four-roller drawing is adopted.

6. The method for manufacturing the structural form of the slideway strip in the linear motion pair according to claim 1, characterized in that: In the annealing process, the rolled workpiece is heated to 720±40 degrees for a holding time of 4-12 hours.

7. The method for manufacturing the structural form of the slideway strip in the linear motion pair according to claim 1, characterized in that: In the annealing process, an annealing furnace is used to perform annealing treatment on the rolled workpiece.

8. The method for manufacturing the structural form of the slideway strip in the linear motion pair according to claim 1, characterized in that: In the rolling process, rolling at room temperature is adopted.

9. The method for manufacturing the structural form of the slideway strip in the linear motion pair according to claim 1, characterized in that: In the rolling process, the cold-rolled workpiece is rolled and formed by a rolling machine.

10. The method for manufacturing the structural form of the slideway strip in the linear motion pair according to claim 1, It is characterized in that In the cold rolling process, round steel with suitable diameter is used as the raw material.

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