Fixing tool for chamfering steel plate spring

Abstract

The utility model relates to the technical field of steel plate spring machining, in particular to a fixing tool for steel plate spring chamfering, which comprises symmetrically arranged supporting plates, a rotating shaft rotatably connected between the supporting plates on two sides and a driving structure arranged on the supporting plate on one side and used for driving the rotating shaft to rotate. A bottom plate used for supporting a steel plate spring is arranged between the steering plates on the two sides, clamping structures used for fixing the steel plate spring are arranged on the bottom plate at equal intervals, a bottom table is further coaxially and fixedly connected to the rotating shaft, a containing groove for a spring eye of the steel plate spring to stretch into is formed in the bottom table, and an abutting block capable of stretching into the containing groove and abutting against the spring eye is detachably connected to the bottom table. The problems that a traditional fixing tool can only fix the spring eye of the steel plate spring, and when a hook head at the other end is chamfered, the steel plate spring is prone to shaking, and chamfering operation is affected are solved.

Description

Technical Field

[0001] This application relates to the field of leaf spring processing technology, and specifically discloses a fixing fixture for chamfering leaf springs. Background Technology

[0002] Leaf springs are one of the most widely used elastic elements in automotive suspensions. They are typically made up of multiple leaf springs stacked in an inverted triangular shape. In this stacked triangular shape, the uppermost leaf spring is the longest, and the lowermost leaf spring is the shortest.

[0003] For leaf springs used at the top, both ends are usually fitted with lugs, which are connected to the hanger lugs via pins and mounted on the car suspension.

[0004] However, some leaf springs do not have lugs at both ends, but rather a lug at one end and a hook at the other. When using them, the sides of the hook need to be chamfered so that the hook of the leaf spring can fit with the external parts.

[0005] In the prior art, such as the fixing fixture for chamfering leaf springs (patent publication number CN221952805U), a base and an intermediate seat are included. The intermediate seat is disposed on and connected to the base. At least one side of the intermediate seat has a protrusion, and positioning elements are provided on both sides of the protrusion. The leaf springs are disposed on both sides of the protrusion and between the protrusion and the fixing elements. The hooks of the leaf springs are located above the protrusions. A pressure plate is provided on the protrusions to press the leaf springs. The protrusions on the intermediate seat press the leaf springs together, and multiple leaf springs can be fixed simultaneously. The hooks of the leaf springs extend from above the protrusions, allowing for simultaneous chamfering of the hooks of multiple leaf springs.

[0006] Although the aforementioned fixture can handle multiple leaf springs simultaneously, it can only fix the leaf spring at the coiled end. Because leaf springs are elastic and have a relatively long length, they are prone to shaking when chamfering the hook at the other end, which affects the chamfering operation.

[0007] This invention provides a fixing fixture for chamfering leaf springs to solve the above-mentioned problems. Utility Model Content

[0008] The purpose of this invention is to solve the problem that traditional fixing fixtures can only fix the coiled part of the leaf spring, and the leaf spring is prone to shaking when chamfering the hook at the other end, which affects the chamfering operation.

[0009] To achieve the above objectives, the basic solution of this utility model provides a fixing fixture for chamfering leaf springs, including symmetrically arranged support plates, a rotating shaft rotatably connected between the support plates on both sides, and a driving structure disposed on one side of the support plate for driving the rotating shaft to rotate. A steering plate is symmetrically fixed to both ends of the rotating shaft, and a base plate for supporting the leaf spring is provided between the two steering plates. A clamping structure for fixing the leaf spring is provided at equal intervals on the base plate. A base platform is also coaxially fixed to the rotating shaft. A receiving groove is opened on the base platform for the leaf spring's coiled lug to extend into, and a stop block that can extend into the receiving groove and abut against the coiled lug is detachably connected to the base platform.

[0010] Furthermore, the receiving groove is an arc-shaped groove that fits the outer wall of the ear, and the abutment is an arc-shaped block that fits the inner wall of the ear.

[0011] Furthermore, the base platform also extends outward with an extension portion of the same height as the base plate for supporting the leaf spring.

[0012] Furthermore, the base plate is slidably connected between the steering plates on both sides, and both ends of the base plate are provided with fasteners that abut against the steering plates.

[0013] Furthermore, the inner side of the steering plate is provided with guide grooves for the end of the base plate to extend into, and both ends of the base plate are provided with internal threaded holes that communicate with the guide grooves. The fastener is a screw rod that is connected to the internal threaded hole by a thread.

[0014] Furthermore, the clamping structure includes a clamping plate one and a clamping plate two fixed to the base plate. A gap is formed between the clamping plate one and the clamping plate two for inserting a steel plate spring. A limiting groove is opened on the inner side of the clamping plate two and a right-angled triangular pyramid block with an upward inclined surface is slidably connected thereto. A spring is fixed between the inner end face of the right-angled triangular pyramid block and the inner bottom surface of the limiting groove one.

[0015] Furthermore, the clamping structure includes a clamping plate one fixed to the base plate and a clamping plate two slidably connected to the base plate. A gap is formed between the clamping plate one and the clamping plate two for inserting a steel plate spring. The bottom of the clamping plate two is provided with a positioning structure. A limiting groove is opened on the inner side of the clamping plate two and a right-angled triangular pyramid block with an upward inclined surface is slidably connected thereto. A spring is fixed between the inner end face of the right-angled triangular pyramid block and the inner bottom surface of the limiting groove one.

[0016] The principle and effect of this solution are as follows:

[0017] Compared with the prior art, this utility model places the leaf spring's coiled lug into the receiving groove, and then presses the leaf spring into the gap between clamping plate one and clamping plate two. During the downward pressing process, the bottom surface of the leaf spring contacts the inclined surface of the top of the right-angled triangular pyramid block, pressing the right-angled triangular pyramid block inward into the limiting groove one, until the leaf spring slides under the right-angled triangular pyramid block. The right-angled triangular pyramid block is reset by the spring, and its bottom right-angled side fits against the top surface of the leaf spring, which plays the role of tightly pressing the leaf spring, thereby fixing the leaf spring and preventing the hook of the leaf spring from shaking during the chamfering process. This solves the problem that traditional fixing fixtures can only fix the leaf spring's coiled lug, and the leaf spring is prone to shaking when chamfering the hook at the other end, which affects the chamfering operation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of a fixing fixture for chamfering a leaf spring according to Embodiment 1 of this application is shown;

[0020] Figure 2 A top view of a fixing fixture for chamfering a leaf spring according to Embodiment 1 of this application is shown;

[0021] Figure 3 A schematic diagram of a clamping plate 2 for a fixing fixture for chamfering a leaf spring, as proposed in Embodiment 1 of this application, is shown.

[0022] Figure 4 A side view of a fixing fixture for chamfering a leaf spring according to Embodiment 1 of this application is shown;

[0023] Figure 5 A schematic diagram of a clamping plate 2 for a fixing fixture for chamfering a leaf spring, as proposed in Embodiment 2 of this application, is shown. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] The reference numerals in the accompanying drawings include: support plate 1, rotating shaft 2, base platform 3, steering plate 4, base plate 5, receiving groove 6, steel leaf spring 7, clamping plate one 8, clamping plate two 9, right-angled triangular cone block 10, screw 11, nut 12, and abutment block 13.

[0026] A fixing fixture for chamfering leaf springs, as shown in Example 1. Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown:

[0027] It includes two symmetrically arranged support plates 1, a rotating shaft 2 installed between the left ends of the support plates 1 on both sides and capable of rotation, and a drive structure installed on the left support plate 1.

[0028] A connecting plate is fixed to the left end of the left support plate 1, and the left end of the rotating shaft 2 passes through the left support plate 1. The drive structure includes a drive motor fixedly mounted on the connecting plate, a transmission shaft mounted on the support plate 1, a belt drive mechanism mounted between the output shaft of the drive motor and the transmission shaft, and a gear drive mechanism mounted between the transmission shaft and the end of the rotating shaft 2.

[0029] A steering plate 4 is fixedly installed at both ends of the rotating shaft 2. The two steering plates 4 are symmetrically arranged, and a base plate 5 is installed between the two steering plates 4. The base plate 5 supports the leaf spring 7. In this embodiment, the base plate 5 can slide between the two steering plates 4. Specifically, the inner side of the steering plate 4 is provided with a guide groove. Both ends of the base plate 5 extend into the guide groove, and both ends of the base plate 5 are provided with threaded holes that communicate with the guide groove. Fasteners that abut against the steering plate 4 are installed at both ends of the base plate 5. The fasteners are screws 11 that are connected to the internal threaded holes by threads and can abut against the wall of the steering plate 4 in the groove.

[0030] Several clamping structures are also equidistantly installed on the base plate 5, which fix the leaf spring 7 placed on the base plate 5. In this embodiment, the clamping structure includes a first clamping plate 8 and a second clamping plate 9 fixed on the base plate 5, with a gap between the first clamping plate 8 and the second clamping plate 9 for inserting the leaf spring 7. Furthermore, a limiting groove is formed on the inner side of the second clamping plate 9, and a slidable right-angled triangular pyramid 10 is installed through the limiting groove. Figure 3 As shown, the inclined surface of the right-angled triangular pyramid 10 faces upward, and a protrusion is formed on the inner end of the right-angled triangular pyramid 10 to prevent it from dislodging from the limiting groove. A spring is also fixedly installed between the inner end face of the right-angled triangular pyramid 10 and the inner bottom surface of the limiting groove to automatically reset the right-angled triangular pyramid 10.

[0031] A base platform 3 is coaxially fixedly mounted on the rotating shaft 2. The base platform 3 has a receiving groove 6 for the lug of the leaf spring 7 to extend into, and a retaining groove is also formed on one end face of the base platform 3, through which a retaining block 13 is engaged. Specifically, the retaining block 13 has a slot for the base platform 3 to extend into, and the slot extends through one side wall of the retaining block 13. A retaining block that can be engaged into the retaining groove is formed on the inner side of the remaining side wall of the retaining block 13. The bottom of the retaining block 13 has a retaining block 13 that can extend into the receiving groove 6 and press against the lug. In this embodiment, the receiving groove 6 is an arc-shaped groove that conforms to the outer wall of the lug, and the retaining block 13 is an arc-shaped block that conforms to the inner wall of the lug. Furthermore, the base platform 3 also extends outwards with an extension portion of the same height as the base plate 5 for supporting the leaf spring 7.

[0032] When using this utility model, the shape of the receiving groove 6 and the abutment block 13 is selected according to the shape of the rolled ear of the steel leaf spring 7 to be ground. The installation distance of the first clamping plate 8 and the second clamping plate 9 is determined by the width of the steel leaf spring 7. The installation height of the right-angled triangular pyramid block 10 is determined by the thickness of the steel leaf spring 7.

[0033] Next, the leaf springs 7 are placed in sequence. First, the lug of the leaf spring 7 is placed into the receiving groove 6. Then, the leaf spring 7 is pressed into the gap between the first clamping plate 8 and the second clamping plate 9. During the downward pressing process, the bottom surface of the leaf spring 7 contacts the inclined surface of the top of the right-angled triangular pyramid 10. The right-angled triangular pyramid 10 is pressed inward into the limiting groove 1 until the leaf spring 7 slides under the right-angled triangular pyramid 10. The right-angled triangular pyramid 10 is reset by the spring, and its right-angled side is in contact with the top surface of the leaf spring 7, which plays the role of pressing the leaf spring 7 tightly, thereby fixing the leaf spring 7 and preventing the leaf spring 7 from shaking during the chamfering process.

[0034] Then, by rotating the output shaft of the drive motor, the rotating shaft 2 is rotated to lift the steering plate 4, which in turn lifts the free end of the steel leaf spring 7, that is, the end with the hook to be polished.

[0035] Example 2, as Figure 5 As shown.

[0036] The difference between Example 2 and Example 1 is that the clamping structure is different.

[0037] In this embodiment, the clamping structure includes a first clamping plate 8 fixedly mounted on the base plate 5 and a second clamping plate 9 mounted on the base plate 5 and slidable. A gap is formed between the first clamping plate 8 and the second clamping plate 9 for inserting a steel leaf spring 7. A second limiting groove is vertically formed through the base plate 5, and a horizontal groove is formed inside the second limiting groove. The bottom of the second clamping plate 9 passes through the second limiting groove and is flush with the bottom surface of the base plate 5. A horizontal plate is integrally formed within the limiting groove of the second clamping plate 9 and installed into the horizontal groove.

[0038] The bottom of the second clamping plate 9 is also equipped with a positioning structure, which includes a screw 11 fixedly installed at the bottom of the second clamping plate 9. The screw 11 passes through the bottom surface of the second clamping plate 9 and a nut 12 is installed by thread. The size of the nut 12 is larger than the size of the limiting groove 2. The second clamping plate 9 is fixed by clamping the nut 12 and the horizontal plate.

[0039] When using this utility model, the gap between the second clamping plate 9 and the first clamping plate 8 can be adjusted by tightening and loosening the nut 12, thereby adapting to the processing of steel leaf springs 7 of different widths.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A fixing tool for chamfering of a steel plate spring, characterized by, The application relates to a support plate, a rotating shaft rotatingly connected between the two support plates and a driving structure arranged on one side of the support plate and used for driving the rotating shaft to rotate, and the rotating shaft is symmetrically fixed with rotating plates at two ends, a bottom plate is arranged between the two rotating plates and used for supporting a leaf spring, clamping structures for fixing the leaf spring are equidistantly arranged on the bottom plate, a bottom base is coaxially fixed on the rotating shaft, the bottom base is provided with a containing groove for the eye of the leaf spring to extend into, and a resisting block is detachably connected to the bottom base and can extend into the containing groove and abut against the eye.

2. The fixing tool for chamfering of a steel plate spring according to claim 1, wherein The containing groove is an arc-shaped groove matching the outer wall of the eye, and the resisting block is an arc-shaped block matching the inner wall of the eye.

3. The fixture for chamfering of a leaf spring according to claim 2, wherein The bottom base further extends outwardly with an extension part in the same height as the bottom plate and used for lifting the leaf spring.

4. The fixture for chamfering of a leaf spring according to claim 1, wherein The bottom plate is slidingly connected between the two rotating plates, and the bottom plate is provided with a fastener abutting against the rotating plate at each end.

5. The fixture for chamfering of a leaf spring according to claim 4, wherein The rotating plate is provided with a guide sliding groove on the inner side for the end of the bottom plate to extend into, and the bottom plate is provided with an internal thread hole at each end and in communication with the guide sliding groove, and the fastener is a screw rod connected with the internal thread hole through threads.

6. The fixing tool for the chamfer of a steel plate spring according to any one of claims 1 to 5, characterized in that, The clamping structure comprises a first clamping plate and a second clamping plate fixed on the bottom plate, a gap is formed between the first clamping plate and the second clamping plate and used for placing the leaf spring, a limiting groove one is formed on the inner side of the second clamping plate and slidingly connected with an inclined straight triangle pyramid block with an upward slope, and a spring is fixed between the inner side end surface of the straight triangle pyramid block and the inner bottom surface of the limiting groove one.

7. The tooling fixture for chamfering a leaf spring according to any one of claims 1 to 5, wherein The clamping structure comprises a first clamping plate fixed on the bottom plate and a second clamping plate slidingly connected on the bottom plate, a gap is formed between the first clamping plate and the second clamping plate and used for placing the leaf spring, a positioning structure is arranged at the bottom of the second clamping plate, a limiting groove one is formed on the inner side of the second clamping plate and slidingly connected with an inclined straight triangle pyramid block with an upward slope, and a spring is fixed between the inner side end surface of the straight triangle pyramid block and the inner bottom surface of the limiting groove one.

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