Fixing clamp for machining double-row hobbing chain wheel

Abstract

The utility model relates to the technical field of elevator chain wheel machining, in particular to a fixing clamp for machining a double-row hobbing chain wheel, which solves the problems that vibration is easy to occur, machining quality is affected and production efficiency is low, and comprises a supporting base, an upper gland, a connecting piece and a limiting piece, the connecting piece comprises a connecting lead screw vertically arranged on the supporting base, a fixing nut and a supporting sleeve arranged on the connecting lead screw in a sleeving mode, the top end of the connecting lead screw penetrates through the upper gland in a sliding mode, and the fixing nut is located above the upper gland and connected to the connecting lead screw in a threaded mode. The length of the supporting sleeve is equal to the sum of the inner diameters of the two double-row hobbing chain wheels; and the effect of improving the production efficiency is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator sprocket machining technical field especially is related to a double row hobbing sprocket machining with fixed clamp. BACKGROUND

[0002] Escalator, also known as automatic escalator, or automatic people elevator, handrail escalator, electric escalator, is a kind of escalator with circulating operation ladder, it is the fixed power-driven equipment for upward or downward inclined passenger transport. Among them, the escalator works by double-row hobbing sprocket and chain cooperation when running. Therefore, the structure, size and other requirements of double-row hobbing sprocket are higher.

[0003] When the outer edge of double-row hobbing sprocket is hobbed by hobbing equipment, the existing clamp can usually only clamp one double-row hobbing sprocket, and the production efficiency is low. In addition, since part of the structure of double-row hobbing sprocket is hollow, the double-row hobbing sprocket is prone to vibration during processing, which affects the processing quality. And the feeding speed of the processing equipment is also low, which reduces the production efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a double-row hobbing sprocket machining with fixed clamp, solves the problem of easy vibration, affects the processing quality, and low production efficiency.

[0005] To achieve the above purpose, the utility model adopts the technical scheme that:

[0006] The utility model provides a double-row hobbing sprocket machining with fixed clamp, including support base, the support base is used for supporting the double-row hobbing sprocket to be processed, still including:

[0007] Upper gland, the upper gland is arranged on the top of the support base and is used for pressing the double-row hobbing sprocket placed on the support base;

[0008] Connecting piece, the connecting piece is used for connecting the support base and the upper gland to realize the fixation of the double-row hobbing sprocket placed on the support base, the connecting piece includes connecting screw rod vertically arranged on the support base, fixed nut and support sleeve sleeved on the connecting screw rod, the top end of the connecting screw rod slides through the upper gland, the fixed nut is located on the top of the upper gland and is screwed on the connecting screw rod, the length of the support sleeve is equal to the sum of the inner diameters of two double-row hobbing sprockets;

[0009] The upper gland and the support base are both provided with limiting pieces for limiting the double-row hobbing sprocket in radial direction.

[0010] Further, the limiting piece comprises a first stepped surface arranged at a radial edge of a lower end surface of the upper gland and a second stepped surface arranged at a radial edge of an upper end surface of the support base.

[0011] Further, a positioning mandrel is arranged, a bottom end of the positioning mandrel is arranged on the support base, and a top end of the positioning mandrel extends upward and slides through the upper gland, and the center axes of the positioning mandrel, the support base and the upper gland are located on the same vertical line.

[0012] Further, the bottom end of the connecting screw rod is detachably connected to the bottom end of the positioning mandrel on the support base.

[0013] Further, the bottom end of the connecting screw rod extends downward and slides through the support base, and a support nut is threadedly connected to the connecting screw rod below the support base.

[0014] Further, the upper end surface and the lower end surface of the support sleeve are both provided with a protective layer.

[0015] Thanks to the above technical scheme, the present application has the following advantages over the prior art:

[0016] The fixing clamp for machining double-row gear hobbing sprocket wheels comprises a support base, an upper gland, a connecting piece and a limiting piece arranged on the upper gland and the support base, the support base is used for supporting a double-row gear hobbing sprocket wheel to be machined, the connecting piece is used for connecting the support base and the upper gland to fix the double-row gear hobbing sprocket wheel placed on the support base, the connecting piece comprises a connecting screw rod arranged vertically on the support base, a fixing nut and a support sleeve, the top end of the connecting screw rod slides through the upper gland, and the fixing nut is arranged above the upper gland and is threadedly connected to the connecting screw rod. Two double-row gear hobbing sprocket wheels can be fixed at one time by using the fixing clamp, and the two double-row gear hobbing sprocket wheels are relatively firm after being fixed, the overall strength is improved, the double-row gear hobbing sprocket wheels are not prone to vibration and deformation during subsequent machining of the outer edge hobbing of the double-row gear hobbing sprocket wheels, and the machining quality is ensured; the overall strength is enhanced, the feeding amount of the hobbing equipment is also improved, and thus the machining efficiency is improved; in addition, the time for hobbing is reduced when the double-row gear hobbing sprocket wheels are hobbed by using the hobbing equipment after the double-row gear hobbing sprocket wheels are fixed by using the fixing clamp, and thus the machining efficiency is also improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Some specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. The same reference signs in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. In the drawings:

[0018] Figure 1 is a sectional view of the fixing clamp with the double-row hobbing sprocket clamped in the preferred embodiment of the present application;

[0019] Figure 2 is a sectional view of the fixing clamp without the double-row hobbing sprocket clamped in the preferred embodiment of the present application;

[0020] Figure 3 is Figure 2 is an enlarged view of A in

[0021] In the drawings, the reference signs are explained as follows:

[0022] 1, double-row hobbing sprocket; 2, support base; 3, upper pressure cover; 4, connecting piece; 41, connecting screw; 42, fixing nut; 43, support sleeve; 5, first stepped surface; 6, second stepped surface; 7, protective layer; 8, positioning mandrel; 9, support nut; 10, nut gasket. DETAILED DESCRIPTION

[0023] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0026] Reference is made to Figure 1 , Figure 2 and Figure 3This invention provides a fixing fixture for machining double-row hobbing sprockets, which can fix two double-row hobbing sprockets 1 in one operation. Specifically, the fixing fixture includes a support base 2, an upper pressure cover 3, and connecting members 4. The support base 1 supports the two double-row hobbing sprockets 1 to be machined. The upper pressure cover 3 is disposed above the support base 2 to cover the two double-row hobbing sprockets 1 placed on the support base 2. The connecting members are used to connect the support base 2 and the upper pressure cover 3 to fix the two double-row hobbing sprockets 1 placed on the support base 2. Multiple connecting members 4 are provided and evenly distributed along the circumference of the support base 2.

[0027] refer to Figure 1 , Figure 2 and Figure 3 The connector 4 includes a connecting screw 41 vertically mounted on the support base 2, a fixing nut 42, and a support sleeve 43 sleeved on the connecting screw 41. The top end of the connecting screw 41 slides through the upper pressure cover 3. The fixing nut 42 is located above the upper pressure cover 3 and is threaded onto the connecting screw 41. The length of the support sleeve 43 is equal to the sum of the inner diameters of the two double-row hobbing sprockets 1.

[0028] refer to Figure 1 , Figure 2 and Figure 3 Both the upper pressure cover 3 and the support base 2 are provided with limiting components for radially limiting the double-row hobbing sprocket 1. The limiting components include a first stepped surface 5 provided on the radial edge of the lower end face of the upper pressure cover 3 and a second stepped surface 6 provided on the radial edge of the upper end face of the support base 2.

[0029] refer to Figure 1 , Figure 2 and Figure 3 During operation, based on the structural features of the double-row hobbing sprockets 1, two double-row hobbing sprockets 1 are symmetrically placed on the support base 2 and pressed down by the upper pressure cap 3. At this time, the support sleeve 43 is embedded inside the two double-row hobbing sprockets 1. The double-row hobbing sprockets 1 have through holes corresponding to the connecting screw 41 for the connecting screw 41 to pass through. The connecting screw 41 passes through the double-row hobbing sprockets 1, the support sleeve 2, and the upper pressure cap 3, and is locked by the fixing nut 42, thereby achieving axial fixation of the double-row hobbing sprockets 1. The support sleeve 43, embedded in the two double-row hobbing sprockets 1, plays a supporting role and prevents deformation of the double-row hobbing sprockets 1 during processing. The upper and lower end faces of the support sleeve 43 are provided with protective layers 7, which protect the double-row hobbing sprockets 1 and prevent wear on the inner wall of the double-row hobbing sprockets 1.

[0030] refer to Figure 1 , Figure 2 and Figure 3When the double-row hobbing sprocket 1 is placed on the support base 2 and pressed by the upper pressure cover 3, the double-row hobbing sprocket 1 is radially fixed under the action of the first step surface 5 and the second step surface 6, and the connecting screw 41 also provides radial positioning for the double-row hobbing sprocket 1.

[0031] refer to Figure 1 , Figure 2 and Figure 3 Therefore, after fixing the double-row hobbing sprocket 1 with this fixing fixture, the two double-row hobbing sprockets are more firmly fixed and less prone to movement, increasing the overall strength. During subsequent outer edge hobbing of the double-row hobbing sprocket 1, the double-row hobbing sprocket 1 is less prone to vibration and deformation, ensuring processing quality. The increased overall strength also allows for a higher feed rate of the hobbing equipment, thereby improving processing efficiency. This fixing fixture can fix two double-row hobbing sprockets 1 at once, reducing loading and unloading time and improving processing efficiency. Furthermore, fixing the two double-row hobbing sprockets 1 with this fixing fixture reduces the hobbing time when using the hobbing equipment, further improving processing efficiency.

[0032] refer to Figure 1 , Figure 2 and Figure 3 It also includes a positioning mandrel 8, the bottom end of which is set on the support base 2, and the top end of the positioning mandrel 8 extends upward and slides through the upper pressure cover 3. The central axes of the positioning mandrel 8, the support base 2, and the upper pressure cover 3 are located on the same vertical line. When fixing the double-row hobbing sprocket 1, the positioning mandrel 8 facilitates the installation and positioning of the upper pressure cover 3, so that the first stepped surface 5 on the upper pressure cover 3 can quickly and easily abut against the double-row hobbing sprocket 1.

[0033] refer to Figure 1 , Figure 2 and Figure 3 Both the bottom end of the connecting screw 41 and the bottom end of the positioning mandrel 8 are detachably connected to the support base 2. The bottom end of the connecting screw 41 extends downward and slides through the support base 2, and a support nut 9 is threaded onto the connecting screw 41 extending below the support base 2. The bottom end of the positioning mandrel 8 is detachably connected to the support base by bolts. With this structure, the length of the connecting screw 41 can be changed according to actual working needs, making this fixing fixture suitable for processing sprockets of different models and sizes. Nut washers 10 are provided between the fixing nut 42 and the upper pressure cover 3, and between the support nut 9 and the support base 2, which can increase the contact area and make the double-row hobbing sprocket 1 more firmly fixed and less prone to loosening. A spring washer is fitted on the bolt fixing the positioning mandrel 8, so that the positioning mandrel 8 is better fixed on the support base 2 and less prone to loosening.

[0034] In summary: Fixing the double-row hobbing sprocket 1 with this clamping fixture improves its overall strength. During subsequent outer edge hobbing, the double-row hobbing sprocket 1 is less prone to vibration and deformation, ensuring processing quality. Increased overall strength also allows for increased feed rate of the hobbing equipment, thereby improving processing efficiency. This clamping fixture can fix two double-row hobbing sprockets 1 at once, reducing loading and unloading time and further improving processing efficiency. Furthermore, fixing the two double-row hobbing sprockets 1 with this fixture reduces hobbing time during hobbing, thus also improving processing efficiency.

[0035] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A fixing fixture for machining double-row hobbing sprockets, comprising a support base (2), the support base (2) being used to support the double-row hobbing sprocket (1) to be machined; characterized in that, Also includes: Upper pressure cover (3), the upper pressure cover (3) is used to press the double-row hobbing sprocket (1) placed on the support base (2); A connector (4) is used to connect the support base (2) and the upper pressure cover (3) to fix the double-row hobbing sprocket (1) placed on the support base (2). The connector (4) includes a connecting screw (41) vertically arranged on the support base (2), a fixing nut (42) and a support sleeve (43) sleeved on the connecting screw (41). The top end of the connecting screw (43) slides through the upper pressure cover (3). The fixing nut (42) is located above the upper pressure cover (3) and is threadedly connected to the connecting screw (41). The length of the support sleeve (43) is equal to the sum of the inner diameters of the two double-row hobbing sprockets (1). Both the upper pressure cover (3) and the support base (2) are provided with limiting members for radially limiting the double-row hobbing sprocket (1).

2. The fixing fixture for machining double-row gear hobbing sprockets according to claim 1, characterized in that, The limiting component includes a first stepped surface (5) disposed on the radial edge of the lower end face of the upper pressure cover (3) and a second stepped surface (6) disposed on the radial edge of the upper end face of the support base (2).

3. The fixing fixture for machining double-row hobbing sprockets according to claim 2, characterized in that, It also includes a positioning mandrel (8), the bottom end of which is disposed on the support base (2), and the top end of which extends upward and slides through the upper pressure cover (3). The central axes of the positioning mandrel (8), the support base (2), and the upper pressure cover (3) are located on the same vertical line.

4. The fixing fixture for machining double-row hobbing sprockets according to claim 3, characterized in that, The bottom end of the connecting screw (41) and the bottom end of the positioning mandrel (8) can be detachably connected to the support base (2).

5. The fixing fixture for machining double-row gear hobbing sprockets according to claim 4, characterized in that, The bottom end of the connecting screw (41) extends downward and slides through the support base (2), and a support nut (9) is threaded onto the connecting screw (41) extending below the support base (2).

6. The fixing fixture for machining double-row hobbing sprockets according to any one of claims 1-5, characterized in that, The upper and lower ends of the support sleeve (43) are provided with protective layers (7).

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