Universal gear measuring instrument auxiliary tool

Abstract

The utility model relates to a universal auxiliary tool for a gear measuring instrument, which is suitable for sheet gears, shaft gears and bevel gears or taper hole gears, and solves the technical problems of higher cost, lower efficiency and incomplete measurement in the prior art. The device comprises a universal base, and a support, a center for a taper hole and a center for a shaft which can be respectively connected with the universal base, the universal base is magnetic, base fixing holes and mounting taper holes are formed in the top end of the universal base, and a base annular plate is arranged on the periphery of the bottom end of the universal base. A through support fixing hole is formed in the support, and the support fixing hole corresponds to the base fixing hole; the upper end surface of the support is used for supporting and fixing a to-be-tested sheet gear through magnetic adsorption; the center for the taper hole comprises a center head for the taper hole and a mounting cone for the taper hole which are connected in sequence, and the center head for the taper hole is used for supporting a bevel gear to be measured or a taper hole type gear; the shaft center comprises a shaft center head, a transition section and a shaft installation cone which are connected in sequence. The shaft center head is used for supporting a shaft gear to be measured.

Description

Technical Field

[0001] The utility model relates to an auxiliary tooling for a measuring instrument, in particular to a general auxiliary tooling for a gear measuring instrument, which is applicable to spline gears, shaft gears, and bevel gears or bevel hole gears. Background Art

[0002] During the processing of gear parts, a gear measuring instrument is generally used to accurately measure the tooth accuracy. At present, there are mainly three methods for accurately measuring the teeth of gear parts:

[0003] First, on-machine online measurement, but the procurement cost and maintenance cost of online measurement equipment are relatively high.

[0004] Second, direct alignment measurement of the workpiece. However, it takes a long time to align the workpiece, seriously affecting the measurement efficiency. Moreover, for parts without a stepped structure, the probe fixing device of the gear measuring instrument will interfere with the workbench surface, and the entire tooth width cannot be measured.

[0005] Third, design a special auxiliary tooling to fix the workpiece on the auxiliary tooling for measurement. However, due to its poor versatility and the large number of toolings to be made, the total cost is still relatively high.

[0006] With the increasing number of products such as gearboxes and new energy reducers, the structures and sizes of different gear parts vary greatly. When accurately measuring the tooth accuracy, it is often necessary to design special toolings according to their structural sizes. This leads to a large number of auxiliary toolings that need to be produced and designed by R & D personnel at the initial stage of new product development. The tooling investment cycle is long and the manufacturing cost is relatively high. In addition, if the product is not produced after trial production, a large number of auxiliary toolings will be wasted. Content of the Utility Model

[0007] The purpose of the utility model is to solve the technical problems of high cost, low efficiency, and incomplete measurement existing in the prior art, and to provide a general auxiliary tooling for a gear measuring instrument.

[0008] In order to achieve the above purpose, the technical solution provided by the utility model is as follows:

[0009] A general auxiliary tooling for a gear measuring instrument, characterized in that it includes a general base, and at least one support, at least one center for taper holes, and at least one center for shafts that can be respectively connected to the general base;

[0010] The general base is magnetic. Along its axial direction, at least two base fixing holes and one installation taper hole are provided at the top end, and a base ring plate is provided at the outer periphery of the bottom end. The base ring plate is used to coaxially fix the general base on the workbench of the gear measuring instrument;

[0011] The support is provided with at least two axially penetrating support fixing holes, and the number of support fixing holes corresponds one-to-one with the number of base fixing holes; the upper end surface of the support is used to support and magnetically adsorb and fix the to-be-tested piece gear.

[0012] The center drill for tapered hole includes a center drill head for tapered hole and a mounting taper for tapered hole which are coaxially connected in sequence. The mounting taper for tapered hole is used for mating connection with the mounting tapered hole; the center drill head for tapered hole is used to support the to-be-tested bevel gear or bevel hole type gear.

[0013] The center drill for shaft includes a center drill head for shaft, a transition section and a mounting taper for shaft which are coaxially connected in sequence. The mounting taper for shaft is used for mating connection with the mounting tapered hole; the transition section is used for smooth transition between the mounting taper for shaft and the center drill head for shaft, and the center drill head for shaft is used to support the to-be-tested shaft gear.

[0014] Further, a switch type magnetic base is placed on the base ring plate.

[0015] The switch type magnetic base is used to magnetize the universal base to make it magnetic.

[0016] Further, the support is made of ferromagnetic material, and a support weight reduction hole is also provided thereon.

[0017] The universal base and the mounting tapered hole are coaxially provided with a base weight reduction hole.

[0018] The base fixing hole is located on the periphery of the base weight reduction hole and is used to connect the support and the universal base through bolts.

[0019] Further, there are at least two supports, including a large-sized support and a small-sized support.

[0020] The support weight reduction hole of the large-sized support is a stepped hole, and the support fixing hole is arranged on the step surface of the stepped hole.

[0021] The support fixing hole of the small-sized support is arranged on its end surface, and the support fixing hole is a stepped hole, so that the upper end surface of the support mounting bolt used to connect the small-sized support and the universal base is lower than the upper end surface of the small-sized support.

[0022] Further, the universal base is of a cylindrical barrel type structure, and the mounting tapered hole and the base weight reduction hole are located at the center of the universal base; the support is of a ring structure, and the axis of the support weight reduction hole coincides with the axis of the support.

[0023] Further, the mounting tapered hole and the mounting taper for tapered hole are selected as Morse No. 3 taper.

[0024] Further, there are three supports, including two large-sized supports and one small-sized support. The specification of the small-sized support is Φ110 / Φ40, and the specifications of the two large-sized supports are Φ200 / Φ120 - Φ50 and Φ300 / Φ200 - Φ50 respectively; there is one center point for tapered holes, and the taper angle of the center point is 60°; there is one center point for shafts, and the taper angle of the center point is 60°.

[0025] Further, a plurality of ring plate threaded holes are provided on the base ring plate. The plurality of ring plate threaded holes are used to cooperate with the connecting base of the gear measuring instrument, and the universal base is fixed on the workbench of the gear measuring instrument through bolts inserted into the ring plate threaded holes.

[0026] The beneficial effects of the present utility model compared with the prior art:

[0027] The present utility model designs a universal auxiliary tooling for gear measuring instruments, which is applicable to spur gears, shaft gears, and bevel gears or bevel hole type gears. It has the advantages of simple structure and high versatility. Among them, the split supports and center points can directly use existing parts in the workshop or be simply structurally designed according to the parts. Cooperating with the universal base to fix the gear to be measured can effectively shorten the tooling development cycle during the development of new products and reduce the manufacturing cost, reducing the time and economic costs of new product development. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of the universal base and the switch-type magnetic base in an embodiment of a universal auxiliary tooling for a gear measuring instrument of the present utility model;

[0029] Figure 2 is a schematic structural diagram of the support in an embodiment of the present utility model, where Figure A is the small-sized support, and Figures B and C are large-sized supports of different sizes;

[0030] Figure 3 is a schematic structural diagram of the center points (center point for tapered holes and center point for shafts) in an embodiment of the present utility model, where Figure A is the center point for tapered holes and Figure B is the center point for shafts;

[0031] Figure 4 is a schematic diagram of fixing a spur gear in an embodiment of the present utility model;

[0032] Figure 5 is a schematic diagram of fixing a bevel hole type gear in an embodiment of the present utility model;

[0033] Figure 6 is a schematic diagram of fixing a shaft gear in an embodiment of the present utility model.

[0034] The descriptions of the reference numerals in the drawings are as follows:

[0035] 1 - Universal base, 101 - Base fixing hole, 102 - Mounting taper hole, 103 - Base ring plate, 104 - Base weight reduction hole; 2 - Support, 201 - Support fixing hole, 202 - Support weight reduction hole; 3 - Center point for taper hole, 301 - Center point head for taper hole, 302 - Mounting taper for taper hole; 4 - Center point for shaft, 401 - Center point head for shaft, 402 - Mounting taper for shaft, 403 - Transition section; 5 - Switch type magnetic base;

[0036] 6 - Spur gear; 7 - Gear for taper hole; 8 - Shaft gear. Detailed implementation mode

[0037] The following will further illustrate the specific technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings.

[0038] The present utility model solves the problem of measuring and positioning most gear parts, saving time and economic costs for the mapping of some parts and the trial production of new products in the initial stage of new product development. It is applicable to spur gears, shaft gears, and bevel gears or gears for taper holes (the reference taper hole is not on the end face), meeting the fixture requirements for most gear parts in the workshop to be precisely measured on a gear measuring instrument.

[0039] The auxiliary fixture provided by the present utility model mainly consists of a universal base and a support or a center point. For spur gears, a support is used for end face positioning; for shaft gears and bevel gears or gears for taper holes (the reference taper hole is not on the end face), a center point is used for taper hole positioning. The support is a simple structural part adapted to the size of the spur gear, and the center point can be selected from common center points in the workshop or can be simply processed.

[0040] See Figures 1 - 3 , a general auxiliary fixture for a gear measuring instrument, including a universal base 1, and three supports 2, a center point for taper hole 3, and a center point for shaft 4 that can be respectively connected to the universal base 1.

[0041] The universal base 1 is a cylindrical barrel - type structure with magnetism. At least two base fixing holes 101 and a mounting taper hole 102 are axially provided at its top end, and a base weight reduction hole 104 is coaxially arranged with the mounting taper hole 102 for weight reduction. The mounting taper hole 102 and the base weight reduction hole 104 are located at the center of the universal base 1, and the base fixing holes 101 are located on the periphery of the base weight reduction hole 104, and the support 2 can be connected to the universal base 1 through bolts.

[0042] The outer periphery of the bottom end of the universal base 1 is provided with a base ring plate 103. The base ring plate 103 fixes the universal base 1 on the workbench of the gear measuring instrument through bolts, making its central axis collinear with the central axis of the gear measuring instrument, so as to ensure that the central axis of the part is collinear with the central axis of the gear measuring instrument during measurement. The base ring plate 103 is provided with a plurality of ring plate threaded holes, which are used to cooperate with the connecting base of the gear measuring instrument. The universal base 1 is fixed on the workbench of the gear measuring instrument through bolts inserted into the ring plate threaded holes. Specifically, the ring plate threaded holes are designed according to different connecting bases. In this embodiment, by referring to the work manual of the gear measuring instrument, there are two circles of evenly distributed threaded holes at three places on the measuring workbench (connecting base), which can be used to connect auxiliary tooling, so corresponding designs are made.

[0043] A switch type magnetic base 5 is placed on the base ring plate 103. The universal base 1 is magnetized by the switch type magnetic base 5 and thus has magnetism. The two are magnetically connected. When the magnetic switch of the switch type magnetic base 5 is turned on, the universal base 1 has magnetism to fix ferromagnetic parts. When it needs to be moved, just turn off the magnetic switch to demagnetize.

[0044] The support 2 is a circular ring structure made of ferromagnetic material, and is provided with at least two axially penetrating support fixing holes 201 and support weight reduction holes 202. The number of support fixing holes 201 is the same as that of the base fixing holes 101 and they correspond one by one. The axis of the support weight reduction hole 202 coincides with the axis of the support 2 for weight reduction; the upper end surface of the support 2 can support and magnetically adsorb and fix the to-be-measured sprocket gear.

[0045] For sprocket gears with different hole diameters, three specifications of supports 2 are designed. The support 2 is fixedly connected to the universal base 1 through bolts. The sprocket gear uses end face positioning. The part is placed on the end face of the support 2, and the switch type magnetic base 5 is turned on to generate suction to fix the part, preventing the part from displacing during measurement. The support 2 includes two large-sized supports and one small-sized support; the support weight reduction hole 202 of the large-sized support is a stepped hole, and the support fixing hole 201 is arranged on the step surface of the stepped hole; the support fixing hole 201 of the small-sized support is arranged on its end face, and the support fixing hole 201 is a stepped hole, so that the upper end surface of the support mounting bolt used to connect the small-sized support and the universal base 1 is lower than the upper end surface of the small-sized support.

[0046] For shaft gears and bevel hole type gears with different hole diameters, center points with different diameters are designed.

[0047] The center point for bevel hole 3 includes a center point head 301 for bevel hole and a mounting taper 302 for bevel hole connected in sequence. The mounting taper 302 for bevel hole is connected and matched with the mounting taper hole 102; the center point head 301 for bevel hole is used to support the to-be-measured bevel gear or bevel hole type gear.

[0048] The arbor center 4 includes an arbor center head 401, a transition section 403, and an arbor mounting taper 402 that are connected in sequence. The arbor mounting taper 402 is connected in a mating manner with the mounting taper hole 102; there is a smooth transition between the transition section 403 and the arbor center head 401, and the arbor center head 401 is used to support the shaft gear to be measured.

[0049] Among them, the mounting taper hole 102 and the taper for mounting on the taper hole 302 are selected as Morse No. 3 tapers;

[0050] The specifications of the small-sized supports are Φ110 / Φ40, and the specifications of the two large-sized supports are Φ200 / Φ120 - Φ50 and Φ300 / Φ200 - Φ50 respectively;

[0051] There is one taper center 3 for the taper hole, with a specification of a taper angle of 60°; there is one arbor center 4, with a specification of a taper angle of 60°.

[0052] The working process of the embodiment of the present utility model is as follows:

[0053] Place the entire set of auxiliary tooling on the workbench of the gear measuring instrument, and be coaxially fixedly connected to the workbench through bolts to ensure the positioning accuracy. Select a support or a center according to the part to be measured. The spur gear part is placed on the end face of the support for positioning; the shaft gear or the taper hole type gear is fixed on the center for centering.

[0054] Measuring the spur gear:

[0055] Install the universal base 2 on the workbench through fixing bolts, then select a suitable support 2 according to the hole diameter of the spur gear 6, fix the support 2 to the universal base 2 through fixing bolts, and then use the gear measuring center to align the center of the inner hole of the spur gear 6. Turn on the switch of the switch-type magnetic base 5 to fix the spur gear 6 and then measurement can be carried out.

[0056] Measuring the shaft gear or the taper hole type gear:

[0057] Place the universal base 2 on the workbench of the gear measuring center, do not tighten the fixing bolts, and then select a suitable center (the taper center 3 for the taper hole or the arbor center 4) according to the taper hole size of the shaft gear 8 or the taper hole type gear 7. Place the center tightly in the taper hole of the universal base 2; use the gear measuring instrument to align the center of the center, then tighten the universal base 2 with the fixing bolts, and then place the lower taper hole of the shaft gear 8 or the taper hole type gear 7 on the center, and move the self-carrying center on the gear measuring instrument to press the upper taper hole of the shaft gear 8 or the taper hole type gear 7, and then measurement can be carried out.

[0058] The above are only embodiments of the present utility model, and do not limit the protection scope of the present utility model. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, is included in the patent protection scope of the present utility model. For those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A general auxiliary tooling for gear measuring instruments, characterized in that: It includes a general base (1), and at least one support (2), at least one center for taper holes (3), and at least one center for shafts (4) that can be respectively connected to the general base (1); The general base (1) is magnetic. Along its axial direction at its top, there are at least two base fixing holes (101) and one mounting taper hole (102). At its bottom periphery, there is a base ring plate (103). The base ring plate (103) is used to coaxially fix the general base (1) on the workbench of the gear measuring instrument; On the support (2), there are at least two axially penetrating support fixing holes (201). The number of support fixing holes (201) is the same as and corresponds one by one to the base fixing holes (101). The upper end surface of the support (2) is used to support and magnetically adsorb and fix the to-be-tested spur gear; The center for taper holes (3) includes a center head for taper holes (301) and a mounting taper for taper holes (302) that are coaxially connected in sequence. The mounting taper for taper holes (302) is used to cooperate and connect with the mounting taper hole (102). The center head for taper holes (301) is used to support the to-be-tested bevel gear or bevel-hole type gear; The center for shafts (4) includes a center head for shafts (401), a transition section (403), and a mounting taper for shafts (402) that are coaxially connected in sequence. The mounting taper for shafts (402) is used to cooperate and connect with the mounting taper hole (102). The transition section (403) is used for smooth transition between the mounting taper for shafts (402) and the center head for shafts (401). The center head for shafts (401) is used to support the to-be-tested shaft gear.

2. The general auxiliary tooling for gear measuring instruments according to claim 1, characterized in that: A switch-type magnetic base (5) is placed on the base ring plate (103); The switch-type magnetic base (5) is used to magnetize the general base (1) to make it magnetic.

3. The general auxiliary tooling for gear measuring instruments according to claim 1 or 2, characterized in that: The support (2) is made of ferromagnetic material, and a weight-reducing hole (202) is also provided on it; The general base (1) is coaxially provided with a base weight-reducing hole (104) with the mounting taper hole (102); The base fixing holes (101) are located on the periphery of the base weight-reducing hole (104) and are used to connect the support (2) and the general base (1) through bolts.

4. The general auxiliary tooling for gear measuring instruments according to claim 3, characterized in that: There are at least two supports (2), including a large-sized support and a small-sized support; The weight-reducing hole (202) of the large-sized support is a stepped hole, and the support fixing hole (201) is arranged on the step surface of the stepped hole; The support fixing hole (201) of the small-sized support is arranged on its end surface. The support fixing hole (201) is a stepped hole, so that the upper end surface of the support mounting bolt used to connect the small-sized support and the general base (1) is lower than the upper end surface of the small-sized support.

5. The general auxiliary tooling for gear measuring instruments according to claim 4, characterized in that: The general base (1) is of a cylindrical tube structure, and the installation taper hole (102) and the base weight reduction hole (104) are located at the central position of the general base (1); The support (2) is of a ring structure, and the axis of the support weight reduction hole (202) coincides with the axis of the support (2).

6. A general gear measuring instrument auxiliary tooling according to claim 5, characterized in that: The installation taper hole (102) and the installation taper for the taper hole (302) are selected as Morse No. 3 tapers.

7. A general gear measuring instrument auxiliary tooling according to claim 6, characterized in that: There are three supports (2), including two large-sized supports and one small-sized support. The specification of the small-sized support is Φ110 / Φ40, and the specifications of the two large-sized supports are Φ200 / Φ120 - Φ50 and Φ300 / Φ200 - Φ50 respectively; There is one taper hole center point (3), and the taper angle of the center point is 60°; There is one shaft center point (4), and the taper angle of the center point is 60°.

8. A general gear measuring instrument auxiliary tooling according to claim 7, characterized in that: A plurality of ring plate threaded holes are provided on the base ring plate (103). The plurality of ring plate threaded holes are used to cooperate with the connection base of the gear measuring instrument, and the general base (1) is fixed on the workbench of the gear measuring instrument through bolts inserted into the ring plate threaded holes.

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