Notch lining fixing tool and perpendicularity control method

Abstract

According to the notched bushing fixing tool and the perpendicularity control method, through innovation of the machining technology and the tool, high-precision machining of the perpendicularity of the end faces and the outer circles of notched bushings of different specifications can be achieved. The tool comprises a supporting seat; the rotation-to-linear motion mechanism is assembled on the supporting seat; the first fixing mechanism and the second fixing mechanism are used for fixing the to-be-machined notch lining in the radial direction, and the movement directions of the first fixing mechanism and the second fixing mechanism are opposite; the third fixing mechanism is used for fixing the to-be-machined notch bushing in the axial direction; the fourth fixing mechanism is installed on the supporting base, and the fourth fixing mechanism is used for fixing the to-be-machined notch lining in the vertical direction; the first fixing mechanism and the second fixing mechanism are both installed on the rotary-to-linear motion mechanism, and the first fixing mechanism and the second fixing mechanism are both connected with the third fixing mechanism.

Description

Technical Field

[0001] The invention relates to a notched bushing fixing tool and a verticality control method. Background Art

[0002] With the development of the times, the requirements for precision of various parts are getting higher and higher. The notched bushing used at the small end of the connecting rod requires the verticality of the end face and the outer circle at the notch to be within 0.05mm. Traditional design requirements do not require verticality. After processing, the verticality is generally within 0.1mm to 0.2mm. The use of traditional processing methods cannot meet the requirements of this bushing. A new processing method is needed to solve the problem of high verticality accuracy requirements of the end face and the outer circle at the notch. In order to meet the processing of notched bushings of different specifications, a new type of universal tooling needs to be designed. Summary of the invention

[0003] The invention provides a notched bushing fixing tool and a verticality control method. Through the innovation of processing technology and tooling, high-precision processing of the verticality of the end face and outer circle of notched bushings with different specifications can be achieved.

[0004] The technical solution of the present invention is: A notched bushing fixing tool, comprising: Support seat; A rotation-to-linear motion mechanism, wherein the rotation-to-linear motion mechanism is mounted on the support seat; A first fixing mechanism and a second fixing mechanism for fixing the notched bushing to be processed in the radial direction, wherein the first fixing mechanism and the second fixing mechanism move in opposite directions; A third fixing mechanism for fixing the notched bushing to be processed in the axial direction; A fourth fixing mechanism, the fourth fixing mechanism is installed on the support seat, and the fourth fixing mechanism fixes the bushing to be processed with a notch in a vertical direction; The first fixing mechanism and the second fixing mechanism are both mounted on the rotation-to-linear motion mechanism, and the first fixing mechanism and the second fixing mechanism are both connected to the third fixing mechanism.

[0005] Preferably, the support seat comprises: A lower support base for connection with a machine tool; An upper support seat, wherein the lower support seat and the upper support seat are arranged opposite to each other and connected; The rotation-to-linear motion mechanism comprises: a lead screw and a first slider and a second slider mounted on the lead screw, wherein the first slider and the second slider move in opposite directions; The lead screw is sandwiched between the upper support seat and the lower support seat; The first fixing mechanism is connected to the first sliding block, and the second fixing mechanism is connected to the second sliding block.

[0006] Preferably, the first fixing mechanism and the second fixing mechanism are both provided with a first assembly hole, and the first assembly hole is arranged toward the radial outer surface of the notched bushing to be processed; The radial fixation of the bushing to be processed with a notch is achieved by locking the first fastening bolt that passes through the first assembly hole and the oil hole of the bushing to be processed with a notch with a nut.

[0007] Preferably, the third fixing mechanism abuts against the axial outer surface of the notched bushing to be processed.

[0008] Preferably, the first fixing mechanism and the second fixing structure are both provided with a second assembly hole; The third fixing mechanism is fixed by locking the second fastening bolt passing through the third fixing mechanism and the second assembly hole with a nut.

[0009] Preferably, the axial outer surface of the bushing to be processed with the notch is abutted by a positioning bolt passing through the third fixing mechanism.

[0010] Preferably, the end surfaces of the first fixing mechanism and the second fixing mechanism facing the bushing to be processed with a notch are both arranged as inclined surfaces, and the two inclined surfaces together form a V-shaped groove for placing the bushing to be processed with a notch.

[0011] Preferably, the fourth fixing mechanism comprises: A pressing plate, the pressing plate being placed inside the notched bushing to be processed; A shaft with a waist-shaped hole, one end of which is mounted on the support seat, and the other end of which passes through the inner hole of the notched bushing to be processed and the clamping plate in the vertical direction; A cylindrical pin, one end of which passes through the clamping plate from the outside of the clamping plate and is inserted into the waist-shaped hole of the shaft.

[0012] The present invention also provides a notched bushing verticality control method, comprising: Step 1: pre-processing, flat grinding the end face of the notched bushing to be processed, ensuring that the end face parallelism of the notched bushing to be processed is within 0.02mm; rough grinding the outer circle of the notched bushing to be processed, ensuring that the outer circle roundness of the notched bushing to be processed is within 0.05mm; rough milling the notch of the notched bushing to be processed, ensuring that the end face of the notch has a margin of 0.5mm, and processing the remaining dimensions of the notched bushing to be processed into a finished product; Step 2: Place the notched bushing to be processed on the notched bushing fixing tool, and fix the notched bushing to be processed axially, radially and vertically by the notched bushing fixing tool to complete the preparation work before processing; Step 3, equipment processing, during processing, the side surface of the first fixing mechanism assembled with the third fixing mechanism is used as the X-direction reference, and the top surface of the support seat is used as the Z-direction reference, and the end surfaces of the two notches of the notched bushing to be processed are milled using a vertical CNC milling machine; Step 4: Send the processed notched bushing to the three-coordinate machine for inspection, and use the outer circle of the notched bushing as a reference to inspect the verticality of the end face at the notch.

[0013] Beneficial effects of the present invention: Processing in this way solves the problem that traditional processing methods cannot meet the vertical accuracy. During the processing, it saves alignment time, which not only improves product quality, but also improves production efficiency and reduces manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of an existing notched bushing; Figure 2 It is a schematic diagram of a notched bushing fixing tool in an embodiment of the present application; Figure 3 It is a top view of the notched bushing fixing tool in the embodiment of the present application. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0016] The present application provides a method for controlling the verticality of a notched bushing, the method comprising: Step 1: pretreatment, flat grinding the end face of the notched bushing 3 to be processed to ensure that the parallelism of the end face of the notched bushing 3 to be processed is within 0.02mm; rough grinding the outer circle of the notched bushing 3 to be processed to ensure that the roundness of the outer circle of the notched bushing 3 to be processed is within 0.05mm; rough milling the notch of the notched bushing 3 to be processed, leaving a margin of 0.5mm on the end face at the notch, and processing the remaining dimensions to the finished product.

[0017] Step 2: Install and fix the notched bushing 3 to be processed. Place the notched bushing 3 to be processed on a notched bushing fixing tool. Use the notched bushing fixing tool to fix the notched bushing 3 axially, radially and vertically to complete the preparation work before processing.

[0018] like Figure 2 and Figure 3 , the notched bushing fixing tool in the embodiment of the present application includes: Support seat 1; A rotation-to-linear motion mechanism 2, wherein the rotation-to-linear motion mechanism 2 is assembled on the support seat 1; A first fixing mechanism 4 and a second fixing mechanism 5 for fixing the notched bushing 3 to be processed in the radial direction, wherein the first fixing mechanism 4 and the second fixing mechanism 5 move in opposite directions; A third fixing mechanism 6 for fixing the notched bushing 3 to be processed in the axial direction; The first fixing mechanism 4 and the second fixing mechanism 5 are both mounted on the rotation-to-linear motion mechanism, and the first fixing mechanism 4 and the second fixing mechanism 5 are both connected to the third fixing mechanism 6 .

[0019] Since the movement directions of the second fixing mechanism 4 and the third fixing mechanism 5 are opposite, and the first fixing mechanism 4 and the second fixing mechanism 5 are assembled on the rotation-to-linear motion mechanism 2; the relative distance between the first fixing mechanism 4 and the second fixing mechanism 5 can be adjusted according to the size requirements of the notched bushing 3 to be processed; when the rotation-to-linear motion mechanism 2 rotates along the first direction, the first fixing mechanism 4 and the second fixing mechanism 5 are driven to be relatively close; when the rotation-to-linear motion mechanism 2 rotates along the second direction, the first fixing mechanism 4 and the second fixing mechanism 5 are driven to be relatively far away.

[0020] In the embodiment of the present application, the first fixing mechanism 4 and the second fixing mechanism 5 are triangular V-shaped irons, and the first fixing mechanism 4 and the second fixing mechanism 5 are both set as inclined surfaces on the side end faces facing the notched bushing 3 to be processed, and the two inclined surfaces together form a V-shaped groove for placing the notched bushing 3 to be processed. The first fixing mechanism 4 is fixed to the first slider 202 by fastening screws, and the second fixing mechanism 5 is fixed to the second slider 203 by fastening screws.

[0021] Reference Figure 2 , the support base 1 comprises: a lower support base 101 for connecting to a machine tool; The upper support seat 102, the lower support seat 102 and the upper support seat 101 are arranged opposite to each other and connected; the rotation-to-linear motion mechanism 2 includes: a screw 201 and a first slider 202 and a second slider 203 mounted on the screw 201, and the movement directions of the first slider 202 and the second slider 203 are opposite; the screw 201 is clamped between the upper support seat 102 and the lower support seat 101; the first fixing mechanism 4 is connected to the first slider 202, and the second fixing mechanism 5 is connected to the second slider 203.

[0022] Among them, Figure 2 The upper support seat 102 and the lower support seat 101 are connected by four fastening bolts 11, and the lower support seat 101 is connected to the workbench of the machine tool by four fastening bolts 12.

[0023] Reference Figure 2 The rotary-to-linear motion mechanism 2 also includes: a handle 203 and a dovetail slide 204, the handle 203 is connected to the lead screw 201; the dovetail slide 204 is arranged below the lead screw 201, and is specifically fixed in the lower support seat 101, and is used to limit the sliding of the first slider 202 and the second slider 203. The handle 8 drives the ball screw 4 to rotate, and the first slider 202 and the second slider 203 move toward or away from each other, so as to adapt to the processing of the notched bushing 3 to be processed with different specifications; The first fixing mechanism 4 and the second fixing mechanism 5 are both provided with a first assembly hole, and the first assembly hole is arranged toward the radial outer surface of the notched bushing 3 to be processed; The first fastening bolt 8 passing through the first assembly hole and the oil hole of the bushing 3 to be processed with a notch is locked with a semicircular nut to achieve radial fixation of the bushing 3 to be processed with a notch.

[0024] Among them, the first assembly hole is specifically a waist-shaped hole set on the inclined surface of the first fixing mechanism 4 and the second fixing mechanism 5. When placing the notched bushing 3 to be processed, it is necessary to align the oil hole of the notched bushing 3 to be processed with the waist-shaped hole to complete the placement of the notched bushing 3 to be processed.

[0025] The third fixing mechanism 6 abuts against the axial outer surface of the bushing 3 with a notch to be processed.

[0026] Wherein, second assembly holes are provided on both the first fixing mechanism 4 and the second fixing structure 5; the third fixing mechanism 6 is fixed by locking the second fastening bolt 9 passing through the third fixing mechanism 6 and the second assembly hole with a nut.

[0027] The third fixing mechanism 6 is specifically a rectangular pressure plate, which is connected to the side of the triangular V-shaped iron through the second fastening bolt 9, and the rectangular pressure plate can be rotated by a certain angle. The positioning bolt 10 is connected to the rectangular pressure plate, and the bottom of the positioning bolt supports the axial end face of the notched bushing 3 to be processed, so as to complete the axial positioning of the notched bushings 3 to be processed with different sizes and lengths.

[0028] The axial outer surface of the bushing 3 to be processed with a notch is abutted by the positioning bolt 10 passing through the third fixing mechanism 6 .

[0029] The end surfaces of the first fixing mechanism 4 and the second fixing mechanism 5 facing the notched bushing 3 to be processed are both arranged as inclined surfaces, and the two inclined surfaces together form a V-shaped groove for placing the notched bushing 3 to be processed.

[0030] Reference Figure 2 , the fourth fixing mechanism 7 comprises: A pressing plate 701 is placed inside the notched bushing 3 to be processed; A shaft 702 with a waist-shaped hole, one end of which is mounted on the support seat 1, and the other end of which passes through the inner hole of the notched bushing 3 to be processed and the clamping plate 701 in the vertical direction; A cylindrical pin 703 , one end of which passes through the pressing plate 702 from the outside of the pressing plate 701 and is inserted into the waist-shaped hole of the shaft 702 .

[0031] The clamping plate 701 cooperates with the shaft 702 with a waist-shaped hole through a cylindrical pin 703 to press the inner hole of the notched bushing 3 with different specifications to be processed, and the shaft 703 is fixed to the upper support seat 102 through a tapered pin.

[0032] By means of the notched bushing fixing tool, the notched bushing 3 to be processed can be firmly fixed in multiple directions.

[0033] Step three, equipment processing, during processing, the side surface of the first fixing mechanism 4 assembled with the third fixing mechanism 6 is used as the X-direction reference, and the top surface of the support seat is used as the Z-direction reference, and a vertical CNC milling machine is used to mill the end surfaces of the two notches of the notched bushing 3 to be processed.

[0034] When machining the notched end face of the notched bushing, the cutting depth shall not exceed 0.05 mm, the feed speed shall not exceed 10 mm / min, and the tool speed shall not be lower than 600 r / min.

[0035] Step 4: Send the processed notched bushing to the three-coordinate machine for inspection, and use the outer circle of the notched bushing as a reference to inspect the verticality of the end face at the notch.

[0036] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0037] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0038] It should also be noted that, in this article, the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is for the convenience of describing 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 of the present invention. In addition, relational terms such as "first" and "second" are used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations, nor can they be understood as indicating or implying relative importance. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements does not include those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such a process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0039] The technical solution provided by the present invention is described in detail above. The principle and implementation mode of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the present invention, and the content of this specification should not be understood as limiting the present invention. At the same time, for those skilled in the art, according to the present invention, there will be different forms of changes in the specific implementation mode and application scope. It is not necessary and impossible to list all the implementation modes here, and the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A notched bushing fixing tool, characterized in that: include: Support seat (1); A rotation-to-linear motion mechanism (2), wherein the rotation-to-linear motion mechanism (2) is assembled on the support seat (1); A first fixing mechanism (4) and a second fixing mechanism (5) for fixing the notched bushing (3) to be processed in the radial direction, wherein the movement directions of the first fixing mechanism (4) and the second fixing mechanism (5) are opposite; A third fixing mechanism (6) for fixing the notched bushing (3) to be processed in the axial direction; A fourth fixing mechanism (7), the fourth fixing mechanism (7) being mounted on the support seat (1), and the fourth fixing mechanism (7) fixing the bushing (3) to be processed with a notch in a vertical direction; The first fixing mechanism (4) and the second fixing mechanism (5) are both mounted on the rotation-to-linear motion mechanism (2), and the first fixing mechanism (4) and the second fixing mechanism (5) are both connected to the third fixing mechanism (6).

2. The notched bushing fixing tool according to claim 1, characterized in that: The support base (1) comprises: A lower support seat (101) for connection with a machine tool; An upper support seat (102), wherein the lower support seat (102) and the upper support seat (101) are arranged opposite to each other and connected; The rotation-to-linear motion mechanism (2) comprises: a lead screw (201), and a first slider (202) and a second slider (203) sleeved on the lead screw (201), wherein the first slider (202) and the second slider (203) move in opposite directions; The lead screw (201) is sandwiched between the upper support seat (102) and the lower support seat (101); The first fixing mechanism (4) is connected to the first sliding block (202), and the second fixing mechanism (5) is connected to the second sliding block (203).

3. The notched bushing fixing tool according to claim 1, characterized in that: The first fixing mechanism (4) and the second fixing mechanism (5) are both provided with a first assembly hole, and the first assembly hole is arranged toward the radial outer surface of the notched bushing (3) to be processed; The first fastening bolt (8) passing through the first assembly hole and the oil hole of the bushing (3) to be processed with a notch is locked with a nut to achieve radial fixation of the bushing (3) to be processed with a notch.

4. The notched bushing fixing tool according to claim 1, characterized in that: The third fixing mechanism (6) abuts against the axial outer surface of the notched bushing (3) to be processed.

5. The notched bushing fixing tool according to claim 4, characterized in that: The first fixing mechanism (4) and the second fixing structure (5) are both provided with a second assembly hole; The third fixing mechanism (6) is fixed by locking the second fastening bolt (9) passing through the third fixing mechanism (6) and the second assembly hole with a nut.

6. The notched bushing fixing tool according to claim 4, characterized in that: The axial outer surface of the bushing (3) to be machined with a notch is abutted by a positioning bolt (10) passing through the third fixing mechanism (6).

7. The notched bushing fixing tool according to claim 1, characterized in that: The end surfaces of the first fixing mechanism (4) and the second fixing mechanism (5) facing the bushing (3) with a notch to be processed are both arranged as inclined surfaces, and the two inclined surfaces together form a V-shaped groove for placing the bushing (3) with a notch to be processed.

8. The notched bushing fixing tool according to claim 1, characterized in that: The fourth fixing mechanism (7) comprises: A pressing plate (701), the pressing plate (701) being placed inside the notched bushing (3) to be processed; A shaft (702) with a waist-shaped hole, one end of the shaft with the waist-shaped hole being mounted on the support seat (1), and the other end passing through the inner hole of the notched bushing (3) to be processed and the pressing plate (701) in a vertical direction; A cylindrical pin (703), one end of which passes through the pressing plate (702) from the outside of the pressing plate (701) and is then inserted into the waist-shaped hole of the shaft (702).

9. A method for controlling the verticality of a notched bushing, characterized in that: include: Step 1: pre-processing, flat grinding the end face of the notched bushing (3) to be processed, ensuring that the parallelism of the end face of the notched bushing (3) to be processed is within 0.02 mm; coarse grinding the outer circle of the notched bushing (3) to be processed, ensuring that the roundness of the outer circle of the notched bushing (3) to be processed is within 0.05 mm; coarse milling the notch of the notched bushing (3) to be processed, ensuring that the end face of the notch has a margin of 0.5 mm, and processing the remaining dimensions of the notched bushing (3) to be processed into a finished product; Step 2, placing the notched bushing (3) to be processed on the notched bushing fixing tool described in any one of claims 1 to 8, and fixing the notched bushing (3) to be processed axially, radially and vertically by the notched bushing fixing tool to complete the preparation work before processing; Step 3: Equipment processing: during processing, the side surface of the first fixing mechanism (4) assembled with the third fixing mechanism (6) is used as the X-direction reference, and the top surface of the support seat (1) is used as the Z-direction reference, and the end surfaces of the two notches of the notched bushing (3) to be processed are milled using a vertical CNC milling machine; Step 4: Send the processed notched bushing to the three-coordinate machine for inspection, and use the outer circle of the notched bushing as a reference to inspect the verticality of the end face at the notch.

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