Bushing press fitting tool and damage experiment tool

Abstract

The utility model discloses a bushing press-fitting tool and destruction experiment tool wherein the bushing press-fitting tool comprises: an upper die assembly, a lower die assembly and a guide piece, the upper die assembly comprises an upper fixed seat, an upper positioning pressure head installed on the upper fixed seat and an attachment piece, and the lower die assembly comprises a lower fixed seat and an upper positioning pressure head installed on the lower fixed seat; the attachment pieces are detachably installed at the bottom of the upper positioning pressing head, and different attachment pieces are matched with bushings of different shapes and / or sizes. According to the bush press-fitting tool, the attachment pieces are arranged, different attachment pieces are customized and replaced according to bushings of different shapes, and the different attachment pieces are matched with the bushings of different shapes and / or sizes. Therefore, the production cost and the use cost of tool replacement are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bushing press-fitting, and more specifically to a bushing press-fitting tool and a destructive test tool. Background Art

[0002] In modern industry, when testing rubber bushings for stiffness and other tests, a press-fitting step is usually required to ensure the accuracy and repeatability of the test. As a test material, the alignment of the rubber bushing in the X / Y / Z directions is a key challenge when performing loading tests in the test fixture. Traditional press-fitting methods often make it difficult to ensure that the bushing is fully aligned in the test fixture, which may affect the accuracy and reliability of subsequent test results.

[0003] In addition, during the destructive test phase, the destructive tooling needs to be customized according to the different shapes of each bushing part. This customization requirement not only increases the manufacturing cost, but also leads to a large waste of storage space. Summary of the invention

[0004] The utility model aims to solve one of the technical problems in the related art to a certain extent. To this end, the utility model proposes a bushing press-fitting tool, which is provided with attachments, and different attachments are customized and replaced according to bushings of different shapes, and different attachments are adapted to bushings of different shapes and / or sizes. In this way, the production cost and use cost of replacing the tooling are reduced.

[0005] The utility model also proposes an application of the bushing press-fitting tool in a destructive test, that is, the utility model also proposes a destructive test tool with the bushing press-fitting tool.

[0006] The technical solution adopted by the utility model is to provide a bushing pressing tool, including: an upper mold assembly, a lower mold assembly and a guide member, the upper mold assembly includes an upper fixed seat, an upper positioning pressure head installed on the upper fixed seat and an attachment, the attachment is detachably installed on the bottom of the upper positioning pressure head, and different attachments are adapted to bushings of different shapes and / or sizes.

[0007] After adopting the above structure, by setting the attachment, different attachments can be customized and replaced according to the bushings of different shapes, and different attachments are adapted to bushings of different shapes and / or sizes. In this way, the production cost and use cost of replacing the tooling are reduced. The setting of the upper positioning pressure head can effectively solve the alignment problem in the traditional press-fitting method. This new tooling simplifies the preparation work before the test and improves the reliability and accuracy of the test results.

[0008] According to one embodiment of the utility model, the attachment has a clamping portion, which is used to be plugged into and fit with the keyway of the inner frame of the bushing; the provision of the clamping portion can prevent relative deflection between the bushing and the attachment, thereby ensuring precise alignment of the rubber bushing in the three directions of X / Y / Z.

[0009] According to one embodiment of the utility model, the bottom end protrusion of the upper positioning pressure head is provided with an upper positioning pin adapted to the axial hole of the inner skeleton of the bushing, and the attachment has a through hole for the upper positioning pin to pass through; the upper positioning pin passes through the through hole and is inserted into the axial hole of the inner skeleton of the bushing, which plays a role in center positioning and prevents the bushing from undesirable positional displacement during the pressing process.

[0010] According to an embodiment of the present invention, the attachment has a clamping portion for clamping a body fixed to the upper positioning pressure head; the attachment is detachably mounted on the upper positioning pressure head by utilizing the clamping force of the clamping portion.

[0011] According to an embodiment of the utility model, the lower mold assembly includes a support base and a test tool, and the test tool is detachably mounted on the support base.

[0012] According to an embodiment of the utility model, the upper fixing seat is fixedly mounted on the guide column, and the support seat is provided with a guide sleeve at a position corresponding to the guide column.

[0013] According to one embodiment of the utility model, the guide member includes a cylinder, a spring and a guide rod, the upper end of the guide rod extends out of the cylinder and is used to be plugged into and matched with the axial hole of the inner skeleton of the bushing, and the spring has an elastic tendency to make the guide rod and the bushing pressed tightly.

[0014] According to an embodiment of the utility model, the side wall of the cylinder is provided with a guide groove, the guide rod is provided with a protrusion corresponding to the position of the guide groove, and the protrusion is slidably matched with the guide groove.

[0015] According to an embodiment of the utility model, the cylinder is provided with a side hole for installing a limiting member, and the limiting member abuts against the guide rod to limit it from sliding out of the cylinder.

[0016] A destructive test tool comprises any one of the above-mentioned bushing press-fitting tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A three-dimensional diagram of a bushing in an embodiment of the utility model;

[0019] Figure 2 A three-dimensional diagram of a press-fitting tool in an embodiment of the utility model;

[0020] Figure 3 It is a cross-sectional view of the press-fitting tool in the embodiment of the utility model;

[0021] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0022] Figure 5 An exploded view of a press-fitting tool in an embodiment of the utility model;

[0023] Figure 6 A three-dimensional diagram of an upper mold assembly in an embodiment of the utility model;

[0024] Figure 7 It is a structural schematic diagram of the upper positioning pressure head and the attachment in the embodiment of the utility model;

[0025] Figure 8 A half-section view of the lower mold assembly in the embodiment of the utility model;

[0026] Fig. 9 A three-dimensional diagram of the lower mold assembly in the embodiment of the utility model;

[0027] Fig.10 A three-dimensional diagram of a guide member in an embodiment of the utility model;

[0028] Fig.11 It is an exploded view of the guide member in the embodiment of the utility model.

[0029] Description of the numbers in the figure:

[0030] 10. Bushing; 20. Upper die assembly; 30. Lower die assembly; 40. Guide member;

[0031] 11. External frame; 12. Internal frame; 13. Keyway; 14. Rubber body;

[0032] 21. Upper fixing seat; 22. Upper positioning pressure head; 23. Attachment; 24. Guide column;

[0033] 211, chute;

[0034] 221, upper positioning pin; 222, body; 223, slider;

[0035] 231, through hole; 232, clamping portion; 233, clamping portion;

[0036] 31. Support seat; 32. Guide sleeve; 33. Test tooling;

[0037] 331, assembly hole;

[0038] 41. Cylinder; 42. Spring; 43. Guide rod; 44. Base; 45. Limiting member;

[0039] 411, guide groove; 412, side hole;

[0040] 431. Bottom plate; 432. Protrusion. DETAILED DESCRIPTION

[0041] 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 only used to explain the present invention, and cannot be understood as limiting the present invention. Embodiment 1

[0042] Combination Figure 1 As shown, in this embodiment, the bushing 10 includes an outer frame 11 and an inner frame 12, the outer frame 11 and the inner frame 12 are coaxial and spaced apart, and the two are connected as a whole through a rubber body 14. The inner frame 12 is provided with an axial hole, and keyways 13 are symmetrically provided on the inner walls at both ends of the axial hole.

[0043] like Figure 2-11 As shown, in this embodiment, a bushing 10 pressing tool is disclosed, including: an upper mold assembly 20, a lower mold assembly 30 and a guide member 40, the upper mold assembly 20 includes an upper fixed seat 21, an upper positioning press head 22 installed on the upper fixed seat 21, and an attachment 23, the attachment 23 is detachably installed on the bottom of the upper positioning press head 22, and different attachments 23 are adapted to bushings 10 of different shapes and / or sizes.

[0044] Furthermore, in this embodiment, the upper die assembly 20 and the lower die assembly 30 are arranged up and down, and the upper die assembly 20 is used to connect to the hydraulic press, and the hydraulic press drives the upper die assembly 20 to move toward or away from the lower die assembly 30, and performs the press fitting work or the destructive test work of the bushing 10. The upper die assembly 20 includes a horizontally arranged upper fixing seat 21 and an upper positioning press head 22 installed on the upper fixing seat 21. Figure 6 As shown, a slide groove 211 is provided on the bottom surface of the upper fixing seat 21 , and the upper positioning press head 22 has a sliding block 223 which is slidably matched with the slide groove 211 .

[0045] Furthermore, in this embodiment, the two sides of the main body 222 of the upper positioning head 22 are symmetrically provided with inwardly facing arc chamfers, and the two sides of the attachment 23 are correspondingly provided with clamping parts 233, and the clamping parts 233 are bending structures adapted to the arc chamfers. The attachment 23 is clamped and fixed to the bottom of the upper positioning head 22 by the clamping force of the bending structure. An upper positioning pin 221 is provided at the bottom center of the main body 222, and the protrusion 432 of the upper positioning pin 221 presents a boss shape on the bottom surface of the main body 222. The outer diameter of the upper positioning pin 221 is adapted to the inner diameter of the shaft hole. According to the different shaft holes of the bushing 10, the upper positioning head 22 and the attachment 23 can be replaced synchronously.

[0046] Specifically, combined Figure 4 and Figure 7-8 As shown, the attachment 23 has a clamping portion 232, and the clamping portion 232 is used to be plugged and matched with the keyway 13 of the inner frame 12 of the bushing 10. The bottom end protrusion 432 of the upper positioning press head 22 is provided with an upper positioning pin 221 adapted to the axial hole of the inner frame 12 of the bushing 10, and the attachment 23 has a through hole 231 for the upper positioning pin 221 to pass through; the upper positioning pin 221 passes through the through hole 231 and is inserted into the axial hole of the inner frame 12 of the bushing 10, which plays a role in center positioning and prevents the bushing 10 from being undesirably offset during the press-fitting process.

[0047] Specifically, the lower mold assembly 30 includes a support seat 31 and a test fixture 33, and the test fixture 33 is detachably mounted on the support seat 31. The upper fixed seat 21 is fixedly mounted on four guide pillars 24, and the support seat 31 is provided with guide sleeves 32 corresponding to the positions of the four guide pillars 24, and the guide pillars 24 and the guide sleeves 32 are slidably matched. An assembly hole 331 is provided in the center of the test fixture 33, and the guide member 40 is fixedly mounted on the lower part of the lower mold assembly 30. The guide member 40 has a floating installation on the guide rod 43, and the upper end of the guide rod 43 passes through the assembly hole 331 and is plugged into the shaft hole at the lower end of the inner frame 12 of the bushing 10.

[0048] Specifically, combined Figure 10-11 As shown, the guide member 40 includes a cylinder 41, a spring 42 and a guide rod 43. The upper end of the guide rod 43 extends out of the cylinder 41 and is used to be plugged into the axial hole of the inner frame 12 of the bushing 10. The spring 42 has an elastic tendency to make the guide rod 43 and the bushing 10 press tightly. The side wall of the cylinder 41 is provided with a guide groove 411, and the guide rod 43 is provided with a protrusion 432 corresponding to the position of the guide groove 411, and the protrusion 432 is slidably matched with the guide groove 411. The cylinder 41 is provided with a side hole 412 for installing a limiter 45, and the limiter 45 presses against the guide rod 43 to limit it from sliding out of the cylinder 41.

[0049] Furthermore, in this embodiment, the guide member 40 further includes a base 44, which is fixedly mounted at the lower part of the cylinder 41 and is combined with the cylinder 41 to form a closed space, in which the entire spring 42 and a part of the guide rod 43 are located. A bottom plate 431 is provided at the bottom of the guide rod 43, and protrusions 432 are symmetrically provided along the edge of the bottom plate 431. The lower end of the spring 42 abuts against the base 44, and the upper end abuts against the bottom plate 431.

[0050] In another embodiment, a destructive test jig is disclosed, including the bushing 10 press-fitting jig described in the above-mentioned embodiment. The destructive test jig and the bushing 10 press-fitting jig have the same usage steps, but their purposes and methods are slightly different. The bushing 10 press-fitting jig is specifically used to install the bushing 10 into the test jig 33 to ensure its stability and correct position. The destructive test jig is used to evaluate the durability and load-bearing capacity of the bushing 10 in the test jig 33. By applying a specific force or pressure to the bushing 10 that has been pressed into the test jig 33, extreme conditions that may be encountered in actual use are simulated to verify whether the design of the bushing 10 meets the expected strength and stability requirements.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 present invention and simplifying the description, and do not indicate or imply 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.

[0052] In 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 one; it can be a mechanical connection, an electrical connection, or communication with each other; 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0054] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A bushing press-fitting tool, characterized in that: include: An upper mold assembly, a lower mold assembly and a guide member, wherein the upper mold assembly includes an upper fixed seat, an upper positioning pressure head installed on the upper fixed seat, and an attachment, wherein the attachment is detachably installed on the bottom of the upper positioning pressure head, and different attachments are adapted to bushings of different shapes and / or sizes.

2. The bushing press-fitting tool according to claim 1, characterized in that: The attachment has a clamping portion, and the clamping portion is used for plugging and matching with the keyway of the inner frame of the bushing.

3. The bushing press-fitting tool according to claim 1, characterized in that: The bottom end protrusion of the upper positioning pressure head is provided with an upper positioning pin adapted to the axial hole of the inner frame of the bushing, and the attachment has a through hole for the upper positioning pin to pass through.

4. The bushing press-fitting tool according to claim 1, characterized in that: The attachment has a clamping portion for clamping and fixing a body of the upper positioning press head.

5. The bushing press-fitting tool according to claim 1, characterized in that: The lower mold assembly includes a support seat and a test fixture, and the test fixture is detachably mounted on the support seat.

6. The bushing press-fitting tool according to claim 5, characterized in that: The upper fixing seat is fixedly mounted on the guide column, and the support seat is provided with a guide sleeve corresponding to the position of the guide column.

7. The bushing press-fitting tool according to claim 1, characterized in that: The guide member includes a cylinder, a spring and a guide rod. The upper end of the guide rod extends out of the cylinder and is used to be plugged into and matched with the axial hole of the inner frame of the bushing. The spring has an elastic tendency to make the guide rod and the bushing press tightly.

8. The bushing press-fitting tool according to claim 7, characterized in that: The side wall of the cylinder is provided with a guide groove, the guide rod is provided with a protrusion corresponding to the position of the guide groove, and the protrusion is slidably matched with the guide groove.

9. The bushing press-fitting tool according to claim 7, characterized in that: The cylinder is provided with a side hole for installing a limiting member, and the limiting member abuts against the guide rod to limit the guide rod from sliding out of the cylinder.

10. A destructive test tool, characterized in that: It comprises the bushing pressing tool as described in any one of claims 1-9.

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